[scilab-Users] drawing out of two data files

[Peng Du]

Dear Sebastian,

Thanks for the reply.

The grid appears to always divide the graph into 10 sections regardless of
the value in the plot command. Is there any way to change it?

Also it would be ideal if the vertical lines are only drawn at the value
points of the curve of data1 or date2, rather than at the pre-defined
intervals. Do you think it is possible?

Best,

Peng


2010/9/20 Sebastian Urban <sebastian.urban at kit.edu>

> Dear Peng,
>
> you can use the grid property of an axis:
>
> plot(1:4);
> myAxis = gca(); myAxis.grid = [1, -1];
>
> The numbers give the grid's color, here the 1 paints a black vertical grid,
> the -1 an invisible horizontal grid.
>
> The grid property (as well as all other graphic properties) is also
> accessible from the gui: Edit -> Figure Properties.
>
> Regards,
> Sebastian
>
>
> On 09/20/2010 03:16 PM, Peng Du wrote:
>
>> Thank you all very much. The solutions look promising.
>>
>> Another thing is how can I draw a vertical line at some specific point
>> of data1 or data2, in order to correlate the values of both curve?
>>
>> Best regards.
>>
>> On 20 September 2010 13:56, Francis Drossaert <Francis.Drossaert at pgs.com
>> <mailto:Francis.Drossaert at pgs.com>> wrote:
>>
>>    t1 = 0:1/(length(data1)-1):tend;
>>
>>    t2 = 0:1/(length(data2)-1):tend;
>>
>>    plot(t1,data1);
>>
>>    plot(t2,data2);
>>
>>    where is tend is your time span.
>>
>>    *From:* Peng Du [mailto:eddy.pdu at gmail.com <mailto:eddy.pdu at gmail.com
>> >]
>>
>>    *Sent:* 20 September 2010 13:42
>>
>>    *To:* users at lists.scilab.org <mailto:users at lists.scilab.org>
>>
>>    *Subject:* Re: [scilab-Users] drawing out of two data files
>>
>>    Thanks for your replies. They are definitely useful but I think it
>>    would be better to make my problem clearer:
>>
>>    Different to the example Antoine provided, my data looks more like
>>    data1=[1,5,76,2,7,32,54,6,343,675,454,32,121,5,6,8,]
>>    data2=[3,12,43,54,65,76]
>>
>>    They are the data collected from an experiment and unlikely to have
>>    any mathematical relationship. The first and last value happen at
>>    the same moment ("1" in data1 and "3" in data2 happens
>>    simultaneously). The difference in the sizes of data1 and data2 is
>>    due to the different sampling rate when collecting data.
>>
>>    What I'd like to do is something like "plot(t,data1); plot(t,data2)"
>>    where t denotes the timespan. So that in the graph the "1" in data1
>>    and "3" in data2 are aligned to the identical x-axis position (time)
>>    whilst "8" in data1 and "75" in data2 are also aligned. And
>>    everything else in between should be averagely distributed.
>>
>>    So how can I get it done?
>>
>>    Thanks very much.
>>
>>    On 20 September 2010 13:08, Francis Drossaert
>>    <Francis.Drossaert at pgs.com <mailto:Francis.Drossaert at pgs.com>> wrote:
>>
>>    Just use plot(x,y) or plot2d(,xy) rather than just plot(y) or
>>    plot2d(y). Scilab will plot irregular sampled data correctly.
>>
>>    For example this will plot a straight line even it irregular sampled:
>>
>>    x = [0,1,2,3,4,4.5,5,5.5,6];
>>
>>    y = [1,2,3,4,5,5.5,6,6.5];
>>
>>    plot(x,y);
>>
>>    *From:* Peng Du [mailto:eddy.pdu at gmail.com <mailto:eddy.pdu at gmail.com
>> >]
>>
>>    *Sent:* 20 September 2010 12:49
>>    *To:* users at lists.scilab.org <mailto:users at lists.scilab.org>
>>
>>    *Subject:* [scilab-Users] drawing out of two data files
>>
>>    Hi everyone.
>>
>>    I have two data files containing information of the event with the
>>    same timespan but in different sampling rate, i.e. they have
>>    different sizes but the first and last line denote the identical
>> moment.
>>
>>    Is there any way I can draw them in one graph and have them proper
>>    aligned? Thanks a lot.
>>
>>    Best regards,
>>
>>    Peng
>>
>>
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>>
>>
> --
> Karlsruher Institut für Technologie (KIT)
> Institut für Stochastik
>
> Sebastian Urban
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