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Mar 19, 2021, 12:13:09 PM3/19/21

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I'm new to gnuplot and find it very powerful but there are a couple of

fairly simple things that I just can't see how to do.

One is to escape in the greek symbol "alpha", "beta","theta" or "pi" or

equivalently to tell the axis scaling logic that I would like an axis to

scaled in fractions of pi. I can rename the variables but pi is well pi!

The compromise I have settled on for now is to plot the results on the

range -1 to 1 and label the axis as theta/pi since I don't know and

can't figure out how to escape it in. I tried \pi a la TeX.

I have also tried various suggestions I found online {/Symbol p} and I

do get an unprintable character displayed as a "?" but nothing more

terminal type is "qt" enhanced.

Thanks for any enlightenment on how to show Greek letters on graphs.

I was initially confused by the distinction when in mono mode between

set mono linetype and set linetype. It all worked OK once I remembered

to explicitly specify set mono linetype.

A few more distinct defined mono linetypes wouldn't go amiss in the

default distribution. 5 seems a bit mean given that they are a bit

tricky to alter. Seems to me when terminal is in mono mode the "mono"

linetype settings should be the ones that get changed by set linetype.

--

Regards,

Martin Brown

fairly simple things that I just can't see how to do.

One is to escape in the greek symbol "alpha", "beta","theta" or "pi" or

equivalently to tell the axis scaling logic that I would like an axis to

scaled in fractions of pi. I can rename the variables but pi is well pi!

The compromise I have settled on for now is to plot the results on the

range -1 to 1 and label the axis as theta/pi since I don't know and

can't figure out how to escape it in. I tried \pi a la TeX.

I have also tried various suggestions I found online {/Symbol p} and I

do get an unprintable character displayed as a "?" but nothing more

terminal type is "qt" enhanced.

Thanks for any enlightenment on how to show Greek letters on graphs.

I was initially confused by the distinction when in mono mode between

set mono linetype and set linetype. It all worked OK once I remembered

to explicitly specify set mono linetype.

A few more distinct defined mono linetypes wouldn't go amiss in the

default distribution. 5 seems a bit mean given that they are a bit

tricky to alter. Seems to me when terminal is in mono mode the "mono"

linetype settings should be the ones that get changed by set linetype.

--

Regards,

Martin Brown

Mar 19, 2021, 3:59:31 PM3/19/21

to

Am 19.03.2021 um 17:13 schrieb Martin Brown:

> I'm new to gnuplot and find it very powerful but there are a couple

> of fairly simple things that I just can't see how to do.

>

> One is to escape in the greek symbol 'alpha', 'beta','theta' or 'pi'

> or equivalently to tell the axis scaling logic that I would like an

> axis to scaled in fractions of pi. I can rename the variables but pi

> is well pi!

The most straightforward method is to set all tics explicitly
> I'm new to gnuplot and find it very powerful but there are a couple

> of fairly simple things that I just can't see how to do.

>

> One is to escape in the greek symbol 'alpha', 'beta','theta' or 'pi'

> or equivalently to tell the axis scaling logic that I would like an

> axis to scaled in fractions of pi. I can rename the variables but pi

> is well pi!

set xtics pi ('pi/2' pi/2, 'pi' pi, '3pi/2' 3*pi/2, \

'2pi' 2*pi, '5pi/2' 5*pi/2, '3pi' 3*pi)

set grid

plot [0:3*pi] sin(x)

, you might use a "do for" loop to create the tics/labels as a macro

string. Alternatively you can just scale everything

set xtics .5 format '%hpi'

set grid

plot [0:3] sin(x*pi) title 'sin(x)'

. It could be nice to be able to add a piece of math containing the

axis variable to the format string, like with gprintf(). You can

post a feature request on gnuplot.sf.net

Use utf8 encoding ("set encoding utf8") to put in the pi symbol

(copy the greek symbols from a web page), or use one of the latex

terminals.

Hth!

Karl

Mar 21, 2021, 5:32:39 AM3/21/21

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--

Regards,

Martin Brown

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