If control sequence under Gnuplot

gnuplot, if-statement

Solution

For gnuplot 4.4.4 the `if` statement must be on a single line:

if (x > 10000) set autoscale x; else set xrange [10:30]

or use `\` to continue on the next line.

if (x > 10000) \
    set autoscale x; \
else \
    set xrange [10:30]

Since 4.6.0 gnuplot can use brackets to delimit the branches:

if (x > 10000) {
    set autoscale x
} else {
    set xrange [10:30]
}

Problem

How to perform control sequences under Gnuplot please? I need to make something like ``` if (x == nan) set xrange[] else set xrange[10:30] ``` I tried something like ``` ( x > 100000 ) ? (set xrange[]) : (set xrange[10:30]) ``` ... buth without success! I spent hours trying to solve this!! Any help please? At worst I can create a shell script an manage this, but I think there should be some control sequences to fix this.

Original source