From: Mike B. <mr...@ne...> - 2007-02-24 02:38:07
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Two questions about 1.8 a. Is there a way to make the zoom rubber-band box more responsive? We have several vector and raster files being read in in near real time, and while the zoom function works by clicking the mouse buttons, the zoom rubber-band box is often not drawn when using the pointer mouse button and dragging. The zoom box works fine when openev is not busy, but in our environment we are updating objects fairly frequently. I'd like for the user interactive features (like zooming, or drawing the zoom box) to be more responsive or possibly have a higher priority...any ideas? b. How do I re-set a raster layer (from code) so that when I re-read a file (of the same name) it uses the new lat/long (origin) information in the file? I'm using the read_file_by_name file (or something close to that) to read in raster files, other external routines then update that file, and I'm re-reading the file periodically (on a signal). The manager code apparently sees this as the same file, and doesn't change the lat/long of the raster file, even though the changed raster data is being read in, the origin of the raster dataset remains the same as in the original file. If I manually delete this layer from the layer dialogue box, then everything works fine, but when I call the remove_layer() method from code, the raster origin remains the same as in the first file read and only new raster data is read in. The layer dialogue code seems to just call the remove_layer() method, but apparently something else is happening to cause the new origin data to be recognized. thanks much, Mike Berry |