On Wed, Oct 30, 2013 at 02:39:02PM -0400, Ramsey Hazbun wrote:
> - the mark grains dialog doesn't seem to run in NONINTERACTIVE mode.
The run mode nomenclature is a bit confusing. NONINTERACTIVE is used
for file modules; IMMEDIATE is the more or less equivalent for
processing modules, see
http://gwyddion.net/documentation/libgwymodule/libgwymodule-gwymoduleenums.php#GwyRunType
> it does not remember the color for the mask.
Mask colour can be set by setting "/0/mask/red", "/0/mask/green" and
"/0/mask/blue" (for channel 0).
> This is critical for my work (I am trying to count the grains).
Grain counting is done by gwy_data_field_number_grains().
Unfortunately, this has a C interface that does not automatically
translate to Python as it works with plain C arrays. So someone would
have to write a wrapper function...
> - In general it seems really difficult to pass parameters to these
> functions. I'm guessing there are some more direct functions I should be
> using and so far I've been using GUI/front-end version. I tried to get
> gwy_data_field_grains_mark_slope () to work, but apparently I don't have it
> quite right. Either I'm a bit clueless (likely), or the function is for C
> and hasn't made it into the python implementation.
This one should work fine in Python. This marks slopes above 50% for
me in the console:
f = gwy.gwy_app_data_browser_get_current(gwy.APP_DATA_FIELD)
m = gwy.gwy_app_data_browser_get_current(gwy.APP_MASK_FIELD)
f.grains_mark_slope(m, 50.0, False)
m.data_changed()
> - I have no idea how to get grain counts or statistics into a text file of
> some sort. I've been relying on another program I have that is great for
> export dot/grain counts, but lacks the image processing that gwyddion has.
The raw grain data export of grain_dist requires to enter the file name
in the GUI. Doing the same thing this module does manually again
apparently fails due to the unavailability of number_grains() (and
apparently at least also gwy_grain_values_calculate() which also does
not translate automatically to Python).
The Python interface suffers from the fact I don't use it as I'm happy
with C. So only rarely missing functions which do not translate
automatically from C and need wrappers in wrap_calls.c are added...
Regards,
Yeti
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