--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LICENSE	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/README.md	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,22 @@
+# latlon-converter
+Converts latitude and longitude into a stardard form
+
+# Usage
+   latlon_conv.py --cmd < input_file > output_file 
+   latlon_conv.py
+
+The `--cmd` option launches the command-line version, otherwise the GUI is launched.
+
+The input file should contain coordinates in maximum two (tab-separated) columns. First line can be a heading with column headings being
+one of: 'lat', 'latitude', 'lon', 'longitude', 'latlon', 'lonlat', 'lat-lon', 'lon-lat'.
+
+The output file is a tab-separated table with original coordinates and standard formattings of them
+
+# GUI
+
+The GUI allows to select the input and output files. It also allows to write the input into the `Input` text area.
+
+The `Load` button loads the text from the input file into the `Input` text area.
+
+The `Process` button performs the conversion. It takes the input from the input file or the `Input` text area, depending on which one is available.
+It writes the output into into the output file, if it's given, otherwise to the `Output` text area.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/latlonConv.xml	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,83 @@
+<tool id="latlonConv" name="latlonConv" version="0.1.0+galaxy0" python_template_version="3.5" profile="21.05">
+<description>Batch converter for geographical cooridinates</description>
+    <requirements>
+    </requirements>
+    <command detect_errors="exit_code"><![CDATA[
+      bash $runme &&
+      $__tool_directory__/latlon_conv --cmd <'input_conv' >'$output1'
+      #if $ansi_out
+        && iconv -f UTF-8 -t ISO-8859-1//IGNORE $output1 -o $output2 -c
+      #end if
+    ]]></command>
+  <configfiles>
+    <configfile name="runme"><![CDATA[
+ file -i $input1  &>checktype.txt
+  if grep -q 'iso' checktype.txt
+  then
+    iconv -f ISO-8859-1 -t UTF-8//IGNORE $input1 -o 'input_conv' -c
+ else
+   cp $input1 input_conv
+ fi
+]]></configfile>
+  </configfiles>
+
+    <inputs>
+        <param  type="data" name="input1" label="Input file" format="tabular,tsv,txt" />
+        <param  type="boolean" name="ansi_out" label="Additional ANSI output (default only UTF-8)" />
+    </inputs>
+    <outputs>
+      <data name="output1" label="LatLon: ${os.path.splitext(os.path.basename($input1.name))[0]}_utf8.tab" format="tsv"/>
+      <data name="output2" label="LatLon: ${os.path.splitext(os.path.basename($input1.name))[0]}_ansi.tab" format="txt">
+         <filter>ansi_out</filter> 
+      </data>
+    </outputs>
+    <tests>
+      <test>
+        <param name="input1" value="latlon_ansi.tab"/>
+        <output name="output1" file="out_from_ansi_to_utf8.tsv"/>
+      </test>
+      <test>
+        <param name="input1" value="latlon_utf8.tab"/>
+        <param  name="ansi_out" value="true"/>
+        <output name="output1" file="out_from_utf8_to_ansi.tsv"/>
+      </test>
+    </tests> 
+    <help><![CDATA[
+**latlon-converter**
+
+A program to convert latitude and longitude from different formats into decimal format.
+Written by V. Kharchev in the framework of the iTaxoTools project.
+Galaxy wrapper for Latlonconverter 0.1 written in 2022/2023 by F. Fischell.
+
+Standalone executables with graphical user interface of the newest version of ASAP for Windows and Mac are available from:
+
+http://itaxotools.org/
+
+https://github.com/iTaxoTools/iTaxoTools-Executables/releases
+
+For more information, see the iTaxoTools manual available at:
+http://itaxotools.org/
+
+
+**Usage:**
+
+The input file should contain coordinates in maximum two (tab-separated) columns. First line can be a heading with column headings being
+one of: 'lat', 'latitude', 'lon', 'longitude', 'latlon', 'lonlat', 'lat-lon', 'lon-lat'. See the iTaxoTools manual for more precise information on the format. 
+
+The output file is a tab-separated table with original coordinates and standard decimal formattings of them.
+
+Input may be ANSI (Windows ISO-8859-1) or UTF-8 (Linux) encoded. Output will be UTF-8 (default) or both. 
+Galaxy can  display the UTF-8 output,  ANSI can only be downloaded.
+
+When uploading the data to Galaxy, make sure to set the datatype to tabular or tsv for UTF-8-files and txt for ANSI files.
+
+
+
+
+    ]]></help>
+  <citations>
+      <citation type="doi">
+          10.11646/megataxa.6.2.1 
+      </citation>
+    </citations>
+</tool>

Binary file latlon_conv has changed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/latlon_conv.py	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,575 @@
+#!/usr/bin/env python3
+import re
+import os
+import math
+import sys
+from typing import List, Tuple, Union, Iterator, Optional
+import tkinter as tk
+from tkinter import ttk
+import tkinter.filedialog as tkfiledialog
+import tkinter.messagebox
+import tkinter.font as tkfont
+import warnings
+
+# the parsers' input type
+Tokens = List[Tuple[int, str]]
+# types of minutes: either a float or int with seconds
+Minute = Union[float, Tuple[int, float]]
+# type of coordinates: either a float or sign, degree and minutes
+Coordinate = Union[float, Tuple[bool, int, Minute]]
+
+
+def dec_minute(minute: Minute) -> float:
+    if isinstance(minute, float):
+        return minute
+    else:
+        return minute[0] + minute[1] / 60
+
+
+def dec_coord(coord: Coordinate) -> float:
+    if isinstance(coord, float):
+        return coord
+    else:
+        return (1 if coord[0] else -1) * (coord[1] + dec_minute(coord[2]) / 60)
+
+
+def sx_coord(coord: Coordinate) -> Tuple[bool, int, Tuple[int, float]]:
+    if isinstance(coord, float):
+        sign = coord >= 0
+        coord = abs(coord)
+        deg = math.floor(coord)
+        return sx_coord((sign, deg, (coord - deg) * 60))
+    else:
+        sign, deg, mm = coord
+        if isinstance(mm, float):
+            mm_int = math.floor(mm)
+            sec = (mm - mm_int) * 60
+            return (sign, deg, (mm_int, sec))
+        else:
+            return (sign, deg, mm)
+
+
+def str_coord(coord: Coordinate, lat: bool) -> str:
+    if lat:
+        hems = ['S', 'N']
+    else:
+        hems = ['W', 'E']
+    if isinstance(coord, float):
+        return f"{abs(coord):.5f}{hems[coord >= 0]}"
+    else:
+        sign,degrees, minutes = coord
+        if isinstance(minutes, float):
+            return f"{degrees}°{minutes:.3f}'{hems[sign]}"
+        else:
+            return f"{degrees}°{minutes[0]}'{minutes[1]:.1f}''{hems[sign]}"
+
+
+def signed_coord(coord: str) -> str:
+    hem = coord[-1]
+    if hem in 'SW':
+        return '-' + coord[:-1]
+    else:
+        return coord[:-1]
+
+
+def prepare_string(string: str) -> str:
+    """
+    standardizes the string
+
+    raises ValueError if both 'O' or 'o' and '°' are present in the string
+    """
+    if ('O' in string or 'o' in string) and '°' in string:
+        raise ValueError("Encountered 'O' to indicate geographical direction which can mean either West (Spanish/French/Italian) or East (German); please change to E or W before conversion.")
+    string = string.casefold()
+    string = re.sub('north', 'n', string)
+    string = re.sub('south', 's', string)
+    string = re.sub('west', 'w', string)
+    string = re.sub('east', 'e', string)
+    string = re.sub(
+        'seconds|sec|["“”‟]|[´`‘’‛][´`‘’‛]|[´`‘’‛] [´`‘’‛]', "''", string)
+    string = re.sub('minutes|min|[´`‘’‛]', "'", string)
+    string = re.sub('degrees|deg|o', '°', string)
+    return string
+
+
+def parse_coord(tokens: Tokens) -> Tuple[Coordinate, Tokens]:
+    """
+    parse a single coordinate and return the rest of the string
+
+    raises a ValueError("parse error") if the beginning doesn't match a coordinate
+    """
+    # deal with the simple situations
+    if not tokens:
+        raise ValueError("parse error")
+    elif len(tokens) == 1:
+        return float(tokens[0][0]), tokens[1:]
+
+    first_sep = tokens[0][1]
+    if first_sep[0] in '.,':
+        # parse floating point coordinate
+        return parse_float(tokens)
+    elif first_sep[0] == '°':
+        # parse degree, minutes coordinate
+        degrees = tokens[0][0]
+        try:
+            minutes, tokens1 = parse_minutes(tokens[1:])
+            return (degrees >= 0, abs(degrees), minutes), tokens1
+        except ValueError:
+            # there is no minutes
+            return (float(degrees), tokens[1:])
+    elif first_sep[0] == 'xB0':
+        # parse degree, minutes coordinate
+        degrees = tokens[0][0]
+        try:
+            minutes, tokens1 = parse_minutes(tokens[1:])
+            return (degrees >= 0, abs(degrees), minutes), tokens1
+        except ValueError:
+            # there is no minutes
+            return (float(degrees), tokens[1:])
+
+    else:
+        raise ValueError("parse error")
+
+
+def parse_float(tokens: Tokens) -> Tuple[float, Tokens]:
+    """
+    parse a float and return the rest of the string
+
+    raise a ValueError("parse error") if the length is less than two
+    """
+    if len(tokens) < 2:
+        raise ValueError("parse error")
+    else:
+        int_part = tokens[0][0]
+        dec_part = tokens[1][0]
+        return (float(str(int_part) + '.' + str(dec_part)), tokens[2:])
+
+
+def parse_minutes(tokens: Tokens) -> Tuple[Minute, Tokens]:
+    """
+    parse a coordinate starting with minutes and return the rest of the string
+
+    raises a ValueError("parse error"), if the parsing fails
+    """
+    # deal with the simple situations
+    if not tokens:
+        raise ValueError("parse error")
+    elif len(tokens) == 1:
+        return float(tokens[0][0]), tokens[1:]
+
+    first_sep = tokens[0][1]
+    if first_sep[0] in '.,':
+        # parse floating point minutes
+        return parse_float(tokens)
+    elif first_sep[0] == "'":
+        # parse minutes, seconds
+        minutes = tokens[0][0]
+        try:
+            seconds, tokens1 = parse_seconds(tokens[1:])
+            return ((minutes, seconds), tokens1)
+        except ValueError:
+            # there is no seconds
+            return (float(minutes), tokens[1:])
+    else:
+        raise ValueError("parse error")
+
+
+def parse_seconds(tokens: Tokens) -> Tuple[float, Tokens]:
+    """
+    parse a coordinate starting with seconds and return the rest of the string
+
+    raises a ValueError("parse error"), if the parsing fails
+    """
+    # deal with the simple situations
+    if not tokens:
+        raise ValueError("parse error")
+    elif len(tokens) == 1:
+        return float(tokens[0][0]), tokens[1:]
+
+    first_sep = tokens[0][1]
+    if first_sep[0] in '.,':
+        # parse floating point seconds
+        return parse_float(tokens)
+    elif first_sep[0:2] == "''":
+        # parse seconds
+        return tokens[0][0], tokens[1:]
+    else:
+        raise ValueError("parse error")
+
+
+def hemisphere_sign(c: str, coord: Coordinate) -> Coordinate:
+    if c in 'ne':
+        return coord
+    else:
+        if isinstance(coord, float):
+            return -coord
+        else:
+            return (not coord[0], coord[1], coord[2])
+
+def cannot_parse_error(tokens: Tokens) -> ValueError:
+    """
+    makes a ValueError
+    "Cannot parse: tokens as str"
+    """
+    return ValueError("Cannot parse: " + ''.join(str(n)+sep for n, sep in tokens))
+
+def parse_coordinates(string: str, lat_first: bool) -> Tuple[Coordinate, Coordinate]:
+    """
+    parses a string into coordinates with latitude first
+
+    lat_first indicates whether latitude is first in unmarked strings
+
+    if the whole string is not consumed, raises a ValueError with the rest
+    """
+    # sanitize the string
+    string = prepare_string(string)
+    # extract the quadrant information
+    letters = [c for c in string if c.isalpha()]
+    quadrant = [c for c in letters if c in 'nsew']
+    if len(letters) > len(quadrant):
+        # there are disallowed letters in coordinates
+        raise ValueError("Letters {set(letters) - set(quadrant)} cannot be regognized as hemispheres")
+    # defines method orient that exchanges and negates the coordinates based on the quadrant
+    if not quadrant:
+        if lat_first:
+            def orient(p: Tuple[Coordinate, Coordinate]
+                       ) -> Tuple[Coordinate, Coordinate]:
+                return p
+        else:
+            def orient(p: Tuple[Coordinate, Coordinate]
+                       ) -> Tuple[Coordinate, Coordinate]:
+                return (p[1], p[0])
+    elif len(quadrant) == 2:
+        if quadrant[0] in 'ns' and quadrant[1] in 'we':
+            def swap(p: Tuple[Coordinate, Coordinate]) -> Tuple[Coordinate, Coordinate]:
+                return p
+        elif quadrant[0] in 'we' and quadrant[1] in 'ns':
+            def swap(p: Tuple[Coordinate, Coordinate]) -> Tuple[Coordinate, Coordinate]:
+                return (p[1], p[0])
+
+        def orient(p: Tuple[Coordinate, Coordinate]) -> Tuple[Coordinate, Coordinate]:
+            return swap((hemisphere_sign(quadrant[0], p[0]), hemisphere_sign(quadrant[1], p[1])))
+    else:
+        raise ValueError(f"Cannot recognize the order of coordinates: {string}")
+    # split the string into tokens
+    tokens = [(int(m.group(1)), m.group(2))
+              for m in re.finditer(r'(-?\d+)([^\d-]*)', string)]
+    # parse coordinates one after the other
+    try:
+        coord0, tokens1 = parse_coord(tokens)
+    except ValueError as ex:
+        raise cannot_parse_error(tokens) from ex
+    if not tokens1 and len(tokens) == 2: # probably the degrees, degrees situation
+        return orient((float(tokens[0][0]), float(tokens[1][0])))
+    try:
+        coord1, rest = parse_coord(tokens1)
+    except ValueError as ex:
+        raise cannot_parse_error(tokens1) from ex
+    if rest:
+        # incomplete parse: error
+        raise cannot_parse_error(rest)
+    else:
+        return orient((coord0, coord1))
+
+def validate_coord(coord: Coordinate, direction: str) -> str:
+    """
+    direction is "latitude" or "longitude"
+
+    Returns a message if minutes or seconds are invalid (not in [0, 60))
+    Otherwise returns an empty string
+    """
+    if isinstance(coord, float):
+        if not 0 <= coord <= 180:
+            return f"Invalid degrees in {direction}"
+        else:
+            return ""
+    else:
+        _, degrees, minutes = coord
+        if not 0 <= degrees <= 180:
+            return f"Invalid degrees in {direction}"
+        if isinstance(minutes, float):
+            if not 0 <= minutes < 60:
+                return f"Invalid minutes in {direction}"
+            else:
+                return ""
+        else:
+            whole_minutes, seconds = minutes
+            if not 0 <= whole_minutes < 60:
+                return f"Invalid minutes in {direction}"
+            elif not 0 <= seconds < 60:
+                return f"Invalid seconds in {direction}"
+            else:
+                return ""
+
+
+def process_simpl(input: Iterator[str]) -> Iterator[List[str]]:
+    # by default latitude comes first)
+    lat_first = True
+    # read the first line
+    try:
+        line = next(input)
+        heading = line.casefold()
+    except StopIteration:
+        return
+    # try to find 'lat' and 'lon' in the first line
+    lat_ind = heading.find('lat')
+    lon_ind = heading.find('lon')
+    if lat_ind >= 0 and lon_ind >= 0:
+        # first line in the heading
+        lat_first = lat_ind <= lon_ind
+        try:
+            line = next(input)
+        except StopIteration:
+            return
+    # yield the output heading
+    both = "latlon" if lat_first else "lotlan"
+    yield ["original_lat", "original_lon", f"original_{both}", "lat_corr", "lon_corr", "lat_dec", "lon_dec", "latlon_dec", "lat_sx", "lon_sx", "latlon_sx", "Remark"]
+    while True:
+        # format the part of the output with the original information
+        line = line.strip()
+        if not line:
+            try:
+                line = next(input)
+            except StopIteration:
+                break
+            continue
+        part1, _, part2 = line.partition('\t')
+        if not part1 or not part2 or part1.isspace() or part2.isspace():
+            original = ["", "", line]
+        elif lat_first:
+            original = [part1, part2, ""]
+        else:
+            original = [part2, part1, ""]
+        # try to parse the line, if it fails, output just the original
+        try:
+            lat, lon = parse_coordinates(line, lat_first)
+        except ValueError as ex:
+            yield original + [""] * 8 + [str(ex)]
+            try:
+                line = next(input)
+            except StopIteration:
+                break
+            continue
+        # validate bounds on minutes and seconds
+        remark = validate_coord(lat, "latitude") + validate_coord(lon, "longitude")
+        if remark:
+            yield original + [""] * 8 + [remark]
+            try:
+                line = next(input)
+            except StopIteration:
+                break
+            continue
+        # compose the output
+        lat_corr = str_coord(lat, True)
+        lon_corr = str_coord(lon, False)
+        lat_dec = str_coord(dec_coord(lat), True)
+        lon_dec = str_coord(dec_coord(lon), False)
+        lat_sx = str_coord(sx_coord(lat), True)
+        lon_sx = str_coord(sx_coord(lon), False)
+        yield original + [lat_corr, lon_corr, signed_coord(lat_dec), signed_coord(lon_dec), f"{lat_dec} {lon_dec}", lat_sx, lon_sx, f"{lat_sx} {lon_sx}", ""]
+        try:
+            line = next(input)
+        except StopIteration:
+            break
+
+
+def launch_gui() -> None:
+    # initialization
+    root = tk.Tk()
+    root.title("LatLonConverter")
+    if os.name == "nt":
+        root.wm_iconbitmap(os.path.join('data', 'LatLonIcon.ico'))
+    mainframe = ttk.Frame(root, padding=5)
+    root.rowconfigure(1, weight=1)
+    root.columnconfigure(0, weight=1)
+    mainframe.rowconfigure(4, weight=1)
+    mainframe.columnconfigure(2, weight=1)
+
+    style = ttk.Style()
+    style.configure("ConvertButton.TButton", background="blue")
+
+    # banner frame
+    banner_frame = ttk.Frame(root)
+    banner_img = tk.PhotoImage(file=os.path.join(
+        "data", "iTaxoTools Digital linneaeus MICROLOGO.png"))
+    banner_image = ttk.Label(banner_frame, image=banner_img)
+    banner_image.grid(row=0, column=0, rowspan=2, sticky='nsw')
+    program_name = ttk.Label(
+        banner_frame, text="LatLonConverter", font=tkfont.Font(size=20))
+    program_name.grid(row=1, column=1, sticky='sw')
+    program_description = ttk.Label(
+        banner_frame, text="A batch converter of geographical coordinates")
+    program_description.grid(row=1, column=2, sticky='sw', ipady=4, ipadx=15)
+    banner_frame.grid(column=0, row=0, sticky='nsw')
+
+
+    # create labels
+    infile_lbl = ttk.Label(mainframe, text="Input file")
+    outfile_lbl = ttk.Label(mainframe, text="Output file")
+
+    # create entries
+    infile_var = tk.StringVar()
+    infile_entr = ttk.Entry(mainframe, textvariable=infile_var)
+    outfile_var = tk.StringVar()
+    outfile_entr = ttk.Entry(mainframe, textvariable=outfile_var)
+
+    # create texts
+    input_frame = ttk.Frame(mainframe)
+    input_frame.rowconfigure(1, weight=1)
+    input_frame.columnconfigure(0, weight=1)
+    input_text = tk.Text(input_frame, width=50, height=15, undo=True)
+    input_lbl = ttk.Label(input_frame, text="Paste coordinates here for fast conversion into decimal format\n(one pair of coordinates per line, in any format)")
+    input_xscroll = ttk.Scrollbar(
+        input_frame, orient=tk.HORIZONTAL, command=input_text.xview)
+    input_yscroll = ttk.Scrollbar(
+        input_frame, orient=tk.VERTICAL, command=input_text.yview)
+    input_text.configure(xscrollcommand=input_xscroll.set,
+                         yscrollcommand=input_yscroll.set)
+    input_lbl.grid(row=0, column=0, sticky='w')
+    input_text.grid(row=1, column=0, sticky='nsew')
+    input_xscroll.grid(row=2, column=0, sticky='nsew')
+    input_yscroll.grid(row=1, column=1, sticky='nsew')
+
+    output_frame = ttk.Frame(mainframe)
+    output_frame.rowconfigure(1, weight=1)
+    output_frame.columnconfigure(0, weight=1)
+    output_text = tk.Text(output_frame, width=50, height=15, wrap='none')
+    output_lbl = ttk.Label(output_frame, text="If the data have been pasted into the window on the left,\nthe converted output will be show here.")
+    output_xscroll = ttk.Scrollbar(
+        output_frame, orient=tk.HORIZONTAL, command=output_text.xview)
+    output_yscroll = ttk.Scrollbar(
+        output_frame, orient=tk.VERTICAL, command=output_text.yview)
+    output_text.configure(xscrollcommand=output_xscroll.set,
+                          yscrollcommand=output_yscroll.set)
+    output_text.configure(state='disabled')
+    # make sure the widget gets focus when clicked
+    # on, to enable highlighting and copying to the
+    # clipboard.
+    output_text.bind("<1>", lambda _: output_text.focus_set())
+    output_lbl.grid(row=0, column=0, sticky='w')
+    output_text.grid(row=1, column=0, sticky='nsew')
+    output_xscroll.grid(row=2, column=0, sticky='nsew')
+    output_yscroll.grid(row=1, column=1, sticky='nsew')
+
+    # internal functions
+    def input_lines() -> Iterator[str]:
+        """
+        returns an iterator over the input lines
+
+        if the input file name is given, the line comes from it,
+        otherwise from the input text widget
+        """
+        filename = infile_var.get()
+        if filename and not filename.isspace():
+            with open(filename, encoding="ansi", errors='replace') as file:
+                for line in file:
+                    yield line
+        else:
+            text = input_text.get('1.0', 'end')
+            for line in text.splitlines():
+                yield line
+
+    def write_output(lines: Iterator[List[str]]) -> None:
+        """
+        writes the output
+
+        if the output file name is given, the output is written to it,
+        otherwise to the output text widget
+        """
+        output_text.configure(state='normal')
+        filename = outfile_var.get()
+        output_text.delete('1.0', 'end')
+        if filename and not filename.isspace():
+            with open(filename, encoding="ansi", mode='w') as file:
+                for line in lines:
+                    print("\t".join(line), file=file)
+        else:
+            for line in lines:
+                output_text.insert('end', f"{line[5]}\t{line[6]}\t{line[-1]}")
+                output_text.insert('end', '\n')
+        output_text.configure(state='disabled')
+
+    def browse_infile() -> None:
+        newpath: Optional[str] = tkfiledialog.askopenfilename()
+        if (newpath):
+            try:
+                newpath = os.path.relpath(newpath)
+            except:
+                newpath = os.path.abspath(newpath)
+            infile_var.set(newpath)
+
+    def browse_outfile() -> None:
+        newpath: Optional[str] = tkfiledialog.asksaveasfilename()
+        if (newpath):
+            try:
+                newpath = os.path.relpath(newpath)
+            except:
+                newpath = os.path.abspath(newpath)
+            outfile_var.set(newpath)
+
+    def process() -> None:
+        """
+        command for the Process button
+        """
+        try:
+            # catch all warnings
+            with warnings.catch_warnings(record=True) as warns:
+                write_output(process_simpl(input_lines()))
+                # display the warnings generated during the conversion
+                for w in warns:
+                    tkinter.messagebox.showwarning("Warning", str(w.message))
+            # notify the user that the converions is finished
+            tkinter.messagebox.showinfo(
+                "Done.", "The processing has been completed")
+        # show the ValueErrors and FileNotFoundErrors
+        except ValueError as ex:
+            tkinter.messagebox.showerror("Error", str(ex))
+        except FileNotFoundError as ex:
+            tkinter.messagebox.showerror("Error", str(ex))
+
+    def load() -> None:
+        """
+        loads the text from the input file into the input text widget
+        """
+        filename = infile_var.get()
+        input_text.delete('1.0', 'end')
+        if filename and not filename.isspace():
+            with open(filename, encoding="utf8", errors='replace') as file:
+                for line in file:
+                    input_text.insert('end', line)
+
+    # create buttons
+    infile_btn = ttk.Button(mainframe, text="Browse", command=browse_infile)
+    outfile_btn = ttk.Button(mainframe, text="Browse", command=browse_outfile)
+    load_btn = ttk.Button(mainframe, text="Load", command=load)
+    process_btn = ttk.Button(mainframe, text="Convert", command=process, style="ConvertButton.TButton")
+
+    # display the widgets
+    infile_lbl.grid(row=0, column=0, sticky='w')
+    infile_entr.grid(row=1, column=0, sticky='we')
+    infile_btn.grid(row=1, column=1, sticky='w')
+
+    outfile_lbl.grid(row=0, column=3, sticky='w')
+    outfile_entr.grid(row=1, column=3, sticky='we')
+    outfile_btn.grid(row=1, column=4, sticky='w')
+
+    load_btn.grid(row=2, column=0)
+    process_btn.grid(row=2, column=2)
+
+    ttk.Separator(mainframe, orient='horizontal').grid(row=3, column=0, columnspan=5, sticky='nsew', pady=20)
+
+    input_frame.grid(row=4, column=0, columnspan=2)
+    output_frame.grid(row=4, column=3, columnspan=2)
+
+    ttk.Separator(root, orient='horizontal').grid(row=1, column=0, sticky='nsew')
+
+    mainframe.grid(row=2, column=0, sticky='nsew')
+
+    root.mainloop()
+
+
+if '--cmd' in sys.argv:
+    for line in process_simpl(sys.stdin):
+        print('\t'.join(line))
+else:
+    launch_gui()

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mypy.ini	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,4 @@
+[mypy]
+namespace_packages = True
+disallow_untyped_defs = True
+check_untyped_defs = True

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/latlon_ansi.tab	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,9 @@
+lat	lon	latlon
+52.2803	10.54879	
+		52,28130N 10,78873E
+52.36335�N	10.21979�E	
+		52.28030, 10.54879
+52�16'49.1''N	10�32'55.3''E	
+		52�16'49.1''N; 10�32'55.3''E
+52�16'49.375''N	10�34'58.1''E	
+		52�24.35'N, 10�38.9678'E

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/latlon_utf8.tab	Sun Jan 29 16:44:56 2023 +0000
@@ -0,0 +1,9 @@
+lat	lon	latlon
+52.2803	10.54879	
+		52,28130N 10,78873E
+52.36335°N	10.21979°E	
+		52.28030, 10.54879
+52°16'49.1''N	10°32'55.3''E	
+		52°16'49.1''N; 10°32'55.3''E
+52°16'49.375''N	10°34'58.1''E	
+		52°24.35'N, 10°38.9678'E