gnuplot - plot different blocks with different color

Question

I have a data like this in a file.dat

I would want to plot each block in different color,

There is no restriction that a specific color, but just some visually different color.

I tried with linetype like this:

for [IDX=0:2] 'file.dat' i IDX u 1:2 with linespoints linetype IDX

it plots all the blocks with different color and obviously only last one is visible.

So what is the right way to do this?

Christoph · Accepted Answer · 2016-05-07 07:59:00Z

6

That is the right way, but you must have two blank lines in order to access different blocks with index.

And, you should start at linetype 1, because linetype 0 is a special linetype for the grid lines:

And the plot command

plot for [IDX=0:2] 'file.dat' index IDX u 1:2 with lp lt IDX+1

answered Jan 13, 2016 at 7:42

Christoph

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2 Comments

Hi, how I have to change the command for plotting all the block if I don't know how many block I have? thanks

@thewoz Use stats to calculate the number of blocks, I think the result is stored in variable STATS_blocks