<tool id="Variance_plot" name="Variance_plot">
  <description>Plottool for variance</description>
  <command interpreter="Rscript"> variance_plot.R $input "$title" $output </command>
  <inputs>
    <param name="input" type="data" format="csv" label="standard deviation pca" />
    <param name = "title" size = "30" type = "text" value = "" label = "Main Title"/>
  </inputs>
  <outputs>
    <data format="png" name="output" />
  </outputs>

  
  <help>
**Function**

Plottool for creating a barplot of variance of PCA

**Input file**

standard deviation (PCA)

**Tip**

Use **PCA** to generate a standard deviation .csv file

  </help>

</tool>