CODEWITHSUNDEEP
gnuplot
aroman
aroman

Reputation: 57

gnuplot isstring function available?

I am digging in gnuplot script. I am trouble with handling of variables.

My calculated variables sometimes are real , sometimes string ("outrange" etc).

Next step i want to put them into a long string after some calculations, but I cannot do.

For example,

my_return_var="1.2 3.4 5 outrange 9 20 3 4"
newstr=""
do for [tmp in my_return_var]{
    newstr=newstr.sprintf("%7.3f ",tmp*4)
    print newstr
}

Because fourth value is "outrange", sprintf return error: f_sprintf: attempt to print string value with numeric format

Thus, if gnuplot has a function checking if the input is string or not and return 1 or 0, like isstring() in C, I could skip this.

Is there any other idea?

Upvotes: 1

Views: 165

Answers (1)

Christoph
Christoph

Reputation: 48420

No, gnuplot doesn't have a string checking function. But you can do string comparison with eq or ne to check against a fixed placeholder:

my_return_var="1.2 3.4 5 outrange 9 20 3 4"
newstr=""
do for [tmp in my_return_var] {
    if (tmp ne "outrange") {
        newstr=newstr.sprintf("%7.3f ",tmp*4)
        print newstr
    }
}

Upvotes: 1

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