[scilab-Users] drawing out of two data files
Sebastian Urban
sebastian.urban at kit.edu
Mon Sep 20 16:36:22 CEST 2010
Sure, just add
myAxis.x_ticks.locations = [1;1.5;2;2.5;3;3.5;4];
myAxis.x_ticks.labels = ["1.0";"1.5";"2.0";"2.5";"3.0";"3.5";"4.0"];
Choose the tick locations and labels as you desire it. Again, that's
also accessible from the GUI via Edit -> Axes properties.
Maybe you should start with a tutorial on plotting, as these are basic
tasks. There are lots of these around (just google) or start directly at
the official website:
http://wiki.scilab.org/Tutorials
Regards, Sebastian
On 09/20/2010 04:12 PM, Peng Du wrote:
> 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
> <mailto: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>
> <mailto: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> <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>
> <mailto: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>
> <mailto: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> <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>
> <mailto: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
> Wissenschaftlicher Mitarbeiter
>
> Kaiserstraße 89, Allianz-Gebäude (05.20), Zimmer 5A-05
> 76133 Karlsruhe
> Telefon: 0721 608-6967
> Fax: 0721 608-6066
> E-Mail: sebastian.urban at kit.edu <mailto:sebastian.urban at kit.edu>
> http://www.math.kit.edu/stoch/~urban/
> <http://www.math.kit.edu/stoch/%7Eurban/>
>
> KIT -- Universität des Landes Baden-Württemberg und nationales
> Forschungszentrum in der Helmholtz-Gemeinschaft
>
>
--
Karlsruher Institut für Technologie (KIT)
Institut für Stochastik
Sebastian Urban
Wissenschaftlicher Mitarbeiter
Kaiserstraße 89, Allianz-Gebäude (05.20), Zimmer 5A-05
76133 Karlsruhe
Telefon: 0721 608-6967
Fax: 0721 608-6066
E-Mail: sebastian.urban at kit.edu
http://www.math.kit.edu/stoch/~urban/
KIT -- Universität des Landes Baden-Württemberg und nationales
Forschungszentrum in der Helmholtz-Gemeinschaft
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