Issue #835 shows that comparing `bins`, which may be a numpy array, with a string `'auto'` leads to element-wise comparison, because the `==` operator for numpy arrays is used. With this commit, potential array and string are switched, so the `==` operator for strings is used, which does no element-wise comparison.
Moved eq function from flowcharts to main function library to support this.
Bonus: fixed a flowchart bug (backspace deletes wrong connector) while I was in there.
commit ca3fbe2ff9
Author: Luke Campagnola <luke.campagnola@gmail.com>
Date: Thu Aug 7 08:41:30 2014 -0400
Merged numerous updates from acq4:
* Added HDF5 exporter
* CSV exporter gets (x,y,y,y) export mode
* Updates to SVG, Matplotlib exporter
* Console can filter exceptions by string
* Added tick context menu to GradientEditorItem
* Added export feature to imageview
* Parameter trees:
- Option to save only user-editable values
- Option to set visible title of parameters separately from name
- Added experimental ParameterSystem for handling large systems of
interdependent parameters
- Auto-select editable portion of spinbox when editing
* Added Vector.__abs__
* Added replacement garbage collector for avoiding crashes on multithreaded Qt
* Fixed "illegal instruction" caused by closing file handle 7 on OSX
* configfile now reloads QtCore objects, Point, ColorMap, numpy arrays
* Avoid triggering recursion issues in exception handler
* Various bugfies and performance enhancements
- Reduces aliasing when zoomed out
- Improves performance and memory usage for large images
Merge branch 'image_downsampling' into develop
Conflicts:
pyqtgraph/graphicsItems/ImageItem.py
- isosurface works for arrays with shapes > 255
- Fixed ImageItem exception building histogram when image has only one value
- Fixed MeshData exception caused when vertexes have no matching faces
- Fixed GLViewWidget exception handler
- integer dtype images now have integer-aligned bins, with bin number
determined by a target value
- step size is automatically chosen based on a target image size
- bins and step arguments have default values 'auto'
When an ImageItem's data has an integer dtype, this patch ensures that
each bin of the LUT histogram contains the same number of integer
values, in order to avoid "spikes" in the histogram that are merely due
to some bins covering more integer values than others.
This commit needs testing (it was rebased from an old commit).
A new function profiling system is implemented. Most importantly, this
allows one to profile various internal functions directly by setting the
`PYQTGRAPHPROFILE` environment variable to a comma separated list of
function and method names, e.g.
PYQTGRAPHPROFILE=functions.makeARGB,ImageItem.render \
python -mexamples
Specifically, items in `PYQTGRAPHPROFILE` must be of the form
`classname.methodname` or `dotted_module_name.functionname`, with the
initial "pyqtgraph." stripped from the dotted module name.
Moreover, the overhead of inactive profilers has been kept minimal: an
introspective check of the caller's name (only if `PYQTGRAPHPROFILE` is
set) and a trivial function (not method) call per profiler call.
The new profilers rely on `sys._getframe` to find the caller's name,
although the previous system (passing the caller's name explicitely)
could certainly have been kept instead.
Finally the API of profilers has been changed: register a
profiling point simply by calling the profiler, and profilers are
automatically flushed on garbage collection. See the docstring of
`pyqtgraph.debug.Profiler` for more details.
