How to skip undefined values in gnu matrix plot

Question

I would like to plot the following dataset by matrix with image in gnuplot:

ifile.txt

1 2 3 3 ? 4
2 ? 4 3 4 ?
3 4 5 3 5 3

I use the command

plot 'ifile.txt' matrix with image

It is plotting the ? as 0 value, while I would like to the skip it as blank.

Kay · Accepted Answer · 2016-11-02 01:36:15Z

2

I got an answer for this. I need to set the missing values in the script as:

 set datafile missing "?"

answered Nov 2, 2016 at 1:36

Kay

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