To recursively search all the *.ogg files under the current dir (denoted by .) and delete them, in Linux shell, type:
find . -name \*.ogg -exec rm {} \;
Nothing fancy. Just a scratchboard for Open Source Geospatial manipulations. Involves (although not limited to) Linux, R, gdal, Quantum GIS, Geoserver etc.
Saturday, May 23, 2009
Tuesday, May 12, 2009
Matching an empty string in a cellstring array in Matlab
Say you have the following cellstring array in Matlab :
a =
{'0.13'
'0.48'
'0.11'
'0.1'
''
''
'0.03'
'0.22'
'0.09'
'0.29'
'0.14'
'0.33'}
In order to match the cellstring array rows with empty strings, use :
regexp(a, '^\d')
or
cellfun('isempty', regexp(a, '^\d'))
Here we are taking advantage of the fact that we have all numeric strings. Anybody any idea on how to accomplish this if the non-empty strings were composed of letters?
a =
{'0.13'
'0.48'
'0.11'
'0.1'
''
''
'0.03'
'0.22'
'0.09'
'0.29'
'0.14'
'0.33'}
In order to match the cellstring array rows with empty strings, use :
regexp(a, '^\d')
or
cellfun('isempty', regexp(a, '^\d'))
Here we are taking advantage of the fact that we have all numeric strings. Anybody any idea on how to accomplish this if the non-empty strings were composed of letters?
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