gnuplot-py-users

[Gnuplot-py-users] splot with matrix option ?

[Eric F. <efe...@pa...>]

Hello

I would like to plot 3d graph from data in a file, but reading data in 
"matrix" mode.

Here is the code I use :

g = Gnuplot.Gnuplot()
plot_volt = Gnuplot.PlotItems._FileItem('data_file')
g.splot(plot_volt)


Unfortunately, it reads the file as 'binary', not 'matrix'. I did not 
find out how to pass the matrix option. Under gnuplot, it works with :

splot('data_file') matrix

is it possible to use it with gnuplot-py ?

Thanks a lot for your help.
Eric

Re: [Gnuplot-py-users] splot with matrix option ?

[<kai...@t-...>]

Hi,

The "matrix" option is currently not supported by Gnuplot.py.  If you 
want to add it, start from the example of the "binary" option to _FileItem.

It is of course possible to read the file into a Numeric array and then 
plot the array as a "Data()" PlotItem.

Michael

Eric Fernandez wrote:

> I would like to plot 3d graph from data in a file, but reading data in 
> "matrix" mode.
> [...]
> Unfortunately, it reads the file as 'binary', not 'matrix'. I did not 
> find out how to pass the matrix option. Under gnuplot, it works with :
>
> splot('data_file') matrix
>
> is it possible to use it with gnuplot-py ?

-- 
Michael Haggerty
mh...@al...

Re: [Gnuplot-py-users] splot with matrix option ?

[Eric F. <efe...@pa...>]

Michael Haggerty wrote:

> Hi,
>
> The "matrix" option is currently not supported by Gnuplot.py.  If you 
> want to add it, start from the example of the "binary" option to 
> _FileItem.
>
> It is of course possible to read the file into a Numeric array and 
> then plot the array as a "Data()" PlotItem.
>
> Michael
>
> Eric Fernandez wrote:
>
>> I would like to plot 3d graph from data in a file, but reading data 
>> in "matrix" mode.
>> [...]
>> Unfortunately, it reads the file as 'binary', not 'matrix'. I did not 
>> find out how to pass the matrix option. Under gnuplot, it works with :
>>
>> splot('data_file') matrix
>>
>> is it possible to use it with gnuplot-py ?
>
>
Hi Michael

Thanks for your answer. I have added the option to the code, and it works !
I am actually working on MacOSX, so gp_macosx.py was also changed. 
Please find the three files I have changed. Sorry to not make a real 
patch for it, I prefer to send you the whole files, because I am not 
really confident with diff.
Could you please check if this is correct (it works on MacOSX and Linux) 
and add it to the CVS ? If there is another way to submit a patch, 
please tell me, I shall try to send it more formally.

Have a nice Easter week-end.
Eric Fernandez