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Regarding contour plot levels setting
Posted 2012年3月22日 GMT-4 05:04 1 Reply
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When i am doing the postprocessing of data using contour plot, COMSOL allow me to have two option on the level, by default it use 20 number of levels in my case(as attachment 1) to represent the magnitude, but when i cannot see contour, then i change it to manual level (as attachment 2) use range(0,5,20).
I thought it is fine for long.But today i present it to my colleague, they ask me a question, what is your legend bar means?is it the highest is only 20?
May i know why i change level, the magnitude of bar also change accordingly?or i do something wrong?
I think is because i do not understand contour level plot
I find Documentation but it only teach how to do it.
"Under Levels, select an Entry method—Number of Levels or Levels for the contours.
- If Number of Levels is selected, enter the total number of levels in the Total levels field (the default is 5).
- If Levels is selected, enter the values for the contour Levels or click the Range button () to "
Any idea sharing?
Attachments:
Hello Chiwei Ong
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In the documentation it says "For Contour plots, Directivity plots, Contour data sets, and Isosurface data sets, under Levels and from the Entry method list, select 'Number of Levels' or 'Levels.' If Number of Levels is selected, enter the total number of levels in the Total levels field (the default is 20 for plots and 5 for data sets). Otherwise, enter the values of the contour Levels or click the Range button to define a specific range of levels."
When using the 'Levels' settings, you are specifying the contour levels (in the same units you have specified under Expression > Units) that will be used in the plot.
Suppose you are plotting temperature (degC) in the contour plot, and the actual data ranges from 634 degC to 855 degC. Then you could specify Levels as "range(600,50,900)".
If you specify a range that includes only a part of the actual data range, COMSOL will "insert" the min or max temperature, or both, as necessary. For example, if you specify the range as "range(650,50,850)", then you will see levels of 634, 650, 700, 750, 800, 850, and 855 degC.
-DW