Re: Plans for gnuplot version 5

[Goodluck L. <goo...@gm...>]

About some features I have suggested long ago, could someone tell me
how are they progressing?

[multiple keys]
[multiple files in the same using spec]
[arrays]
[control over dashed lines]

gbliu


在 2014-03-06 1:52, Ethan A Merritt 写道:
> On Wednesday, 05 March, 2014 19:18:24 Liu Guibin wrote:
>> I expect that gnuplot can have the following several functions:
> [multiple keys]
> [multiple files in the same using spec]
> [arrays]
> [control over dashed lines]
>
> In general adding a new feature does not break older scripts or familiar usage.
> So in general a new feature can be added at any time; it does not need to
> wait for a transition from one major release to the next, in this case version 4
> to version 5.
>
> The four features you mention are reasonable suggestions.
> That does not mean that it would be easy to implement, but if someone
> someone contributes code for any or all of them I don't see any
> obvious reason why they couldn't be added  when ready without breaking
> backward compatibility.
>
> Two of these, more control over key placement and multiple files contributing
> to a single plot, are already tracked in the Feature Requests section on
> the project development site on SourceForge.  The other two, arrays and
> dashed lines, have been discussed on the mailing list but I do not see
> Feature Request entries for them.  Feel free to add them.
>
> 	Ethan
>
>
>
>
>>
>> <1>.
>>
>> I expect that the keys (legends) can be manipulated in groups in stead
>> of as a whole objects.
>>
>> e.g.
>>
>> set key 1 top right
>> set key 2 bottom left
>> plot 'data' t 't1a' key 1, '' t 't1b' key 1, '' t 't2a' key 2, '' t
>> 't2b' key 2
>>
>> Thus, if I have many legends and there's no space to put them together,
>> I can divide them into two groups
>> "key 1" and "key 2" and put them at different places.
>>
>>
>> <2>.
>>
>> Columns from different files can be calculated together. e.g. I have two
>> files that have the same format, say, 100 row of (x, y) data, named
>> 'file1' and 'file2'. Now I want to plot the different between y columns
>> from the two files.
>>
>> plot 'file1' u 1:($2-column('file2',2)) w lp
>>
>>
>> <3>.
>>
>> I expect gnuplot to have arrays.
>>
>>
>> <4>.
>>
>> I want to set the style of dashed line, that is, how dashed the line is.
>> e.g. - - - - or - - - - or -- -- -- ....
>>
>>
>>
>> gbliu
>>
>>
>> 于 2014-03-05 12:51, sfeam 写道:
>>> Important note:  If there is some behaviour or syntax in gnuplot
>>> that has been annoying you for the last 20 years, please speak up.
>>> This is the best chance you will have to get it changed!
>>
>>
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