gnuplot-info

[Gnuplot-info] character replacement functionality?

[Jon <dev...@gm...>]

I need to use gnuplot to quickly glance whether a sequence of data follow a
reasonable pattern, thus I need to modify a figure in the datafile name to
achieve it. For example,

p 'a1000_phi_24' u (f($1,width)):(1) smooth freq with
boxes,'a1000_phi_24.hist' u 1:2 w p,'a1000_phi_24.hist2' u 1:2 w p

where 24 will be replaced by 25, 26 ,...

I am wondering whether I can do something like the following:

define a string as

s=24,

and issue a command as

p 'a1000_phi_'+str(s) u (f($1,width)):(1) smooth freq with
boxes,'a1000_phi_'+str(s)+'.hist' u 1:2 w p,'a1000_phi_'+str(s)+'.hist2' u
1:2 w p

just like in python. Then I can change s=24 to s=25, etc, thus easily plot
according to the rest data files.

Thanks for your hints!

John L.

Re: [Gnuplot-info] character replacement functionality?

[Hans-Bernhard B. <HBB...@t-...>]

On 27.09.2010 10:33, Jon wrote:
> I am wondering whether I can do something like the following:
>
> define a string as
>
> s=24,
>
> and issue a command as
>
> p 'a1000_phi_'+str(s) u (f($1,width)):(1) smooth freq with
> boxes,'a1000_phi_'+str(s)+'.hist' u 1:2 w p,'a1000_phi_'+str(s)+'.hist2' u
> 1:2 w p

Look up "help expressions", read up on string operations, then follow 
through to operators, binary.

Re: [Gnuplot-info] character replacement functionality?

[Jon <dev...@gm...>]

Hans, thanks a lot for your informative hint! This solves my problem!

John


2010/9/27 Hans-Bernhard Bröker <HBB...@t-...>

> On 27.09.2010 10:33, Jon wrote:
>
>> I am wondering whether I can do something like the following:
>>
>> define a string as
>>
>> s=24,
>>
>> and issue a command as
>>
>> p 'a1000_phi_'+str(s) u (f($1,width)):(1) smooth freq with
>> boxes,'a1000_phi_'+str(s)+'.hist' u 1:2 w p,'a1000_phi_'+str(s)+'.hist2' u
>> 1:2 w p
>>
>
> Look up "help expressions", read up on string operations, then follow
> through to operators, binary.
>
>