[scilab-Users] drawing out of two data files

[Peng Du]

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>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]
> *Sent:* 20 September 2010 13:42
>
> *To:* 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>
> 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]
> *Sent:* 20 September 2010 12:49
> *To:* 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
>
>
> This e-mail, including any attachments and response string, may contain
> proprietary information which is confidential and may be legally privileged.
> It is for the intended recipient only. If you are not the intended recipient
> or transmission error has misdirected this e-mail, please notify the author
> by return e-mail and delete this message and any attachment immediately. If
> you are not the intended recipient you must not use, disclose, distribute,
> forward, copy, print or rely on this e-mail in any way except as permitted
> by the author.   ­­
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20100920/3af0c5c4/attachment.htm>