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feldpausch
Germany
2 Posts |
 Posted - 07/28/2003 : 08:18:29 AM
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dear specialists,
how to plot y versus x with different values for y errorbars
eg. y(x)=12, positive-y-error=1, negative-y-error=2 ?
(I'm using Origin 6.0 and 6.1)
thanks for your info!
yours Philipp
Edited by - feldpausch on 07/28/2003 08:51:56 AM |
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easwar
USA
1965 Posts |
Posted - 07/28/2003 : 09:22:02 AM
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Hi Philipp,
You can have more than one error bar column associated with a plot. So you can do the following:
1> Set up your data as
X Y YErr YErr
2> Place the positive error bar data in one of the YErr columns and the negative error bar data in the other YErr column
3> Create the plot and add both error bar columns to your plot. You can highlight all columns and click on a plot button, or you can move in the error bar datasets to an existing plot using the Layer Dialog.
4> Bring up Plot Details dialog, and navigate to the error datasets.
5> On the ErrorBar tab, under Direction, set one error dataset as Plus only, and the other as Minus only.
Easwar
OriginLab.
Edited by - Easwar on 07/28/2003 09:28:29 AM |
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greg
USA
1379 Posts |
Posted - 08/21/2003 : 1:11:46 PM
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You can make use of LabTalk to simplify this procedure.
First, define a macro:
def plotplusminus {
%M = %1;
%N = %2;
%O = %3;
win -t plot scatter;
layer -i %M %N %O;
set %N -op %M;
set %O -om %M;
layer -a;
};
Then you can call the macro and pass the name of the Y data, the name of the Plus error bar data and the name of the Minus error bar data.
For example:
plotplusminus data1_b data1_D data1_C;
Note that the three datasets must be from the same worksheet.
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plot different negative and positive ErrBars