visualdatatools.com

[kevingross]

Hi,

Suppose I have a CSV file containing the following columns: X,Y1,Y2,...,YN. Here, N may vary and be somewhat large, say between 20-50. Is it possible to plot X vs Y1, X vs Y2, ... X vs YN on top of each other from the command line (dgraph)? (By default, it only shows X vs Y1.) And if I wanted all the curves to be identically formatted in some non-default way, how could I easily accomplish this?

Thanks,

Kevin

[David]

The first step is to create the template script, let's say it is called

/tmp/template.dplot

Then you run it on the file with

dgraph -Scdript /tmp/template.dgraph textfilename -output out.pdf


To create template.dplot with 51 columns and ready to draw 50 lines on top of each other, there is a shortcut (well, it requires 101 clicks, but it is quick).

Create 49 additional number columns, by clicking 49 times on the "3" icon below the data table.

Now, select all the columns (click on one, then command-A to select the rest), command-click on the y column, so now the 1st, 3rd,4th,5th,...,51st columns are selected. Now click 49 times on the plot icon in the toolbar.

The rule is that if you have columns selected, and click on the plot or scatter icon, the first two selected columns are used, and then the second selected column is deselected. So select three columns and hit the scatter twice and you draw x-y1 and x-y2.

David