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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hello,i tried the example from Don Murray for Logarithmic Axis (http://www.unidata.ucar.edu/mailing_lists/archives/visad/2007/msg00053.html) and i think i found the bug why auto scaling is not working.
First, in LogCoordinateSystem.toReference(vales):there is no validation if log value can be calculated (no "0" checking, so log(0) results in -INFINITE). I changed the line
logValues[i][j] = Math.log(values[i][j])/Math.log(base);
to
logValues[i][j] =(values[i][j]==0)?0:
Math.log(values[i][j])/Math.log(base);
The next possible bug is in FlatField.computeRanges(ShadowType type, DataShadow shadow) line 54318. If i comment out the range component mapping, ( if (!any_mapped) return shadow), line 5322) it works (Log Axis with auto scaling). The problem is, that the rangeComponent has the RealType "Values", not "LogValues", so the Display Indices is set to -1;
I have no idea if the modification has some side effects (I could not find any unit test), but for my use case it works.
Is there a any kind of bug tracker? Thanks a lot for this great library, Stefan Below
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