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python Programming Glossary: polygonhttp://stackoverflow.com/questions/13542855/python-help-to-implement-an-algorithm-to-find-the-minimum-area-rectangle-for-gi coordinate value derived from the convex hull blue of a polygon red . see Figure 560023.44957588764 6362057.3904932579 560023.44957588764.. O n algorithm for computing maximum diameter of a convex polygon. That is it maintains three indexes iL iP iR to the leftmost..
Data binning: irregular polygons to regular mesh http://stackoverflow.com/questions/13934959/data-binning-irregular-polygons-to-regular-mesh binning irregular polygons to regular mesh I have thousands of polygons stored in a table.. irregular polygons to regular mesh I have thousands of polygons stored in a table format given their 4 corner coordinates which.. represent small regions of the earth. In addition each polygon has a data value. The file looks for example like this lat1..
Reverse Geocoding Without Web Access http://stackoverflow.com/questions/1425149/reverse-geocoding-without-web-access the latitude and then the longitude or vice versa . Define polygons for each of the states and do some sort of calculation to determine.. and do some sort of calculation to determine in which polygon a lat lon pair lies. I am not sure exactly how to go about this...
http://stackoverflow.com/questions/3654289/scipy-create-2d-polygon-mask a numpy 2D array which represents a binary mask of a polygon using standard Python packages. input polygon vertices image.. mask of a polygon using standard Python packages. input polygon vertices image dimensions output binary mask of polygon numpy.. polygon vertices image dimensions output binary mask of polygon numpy 2D array Larger context I want to get the distance transform..
how to calculate the area of a polygon on the earth's surface using python http://stackoverflow.com/questions/4681737/how-to-calculate-the-area-of-a-polygon-on-the-earths-surface-using-python to calculate the area of a polygon on the earth's surface using python The title basically says.. says it all. I need to calculate the area inside a polygon on the Earth's surface using Python. Calculating area enclosed.. using Python. Calculating area enclosed by arbitrary polygon on Earth's surface says something about it but remains vague..
How to extract an arbitrary line of values from a numpy array? http://stackoverflow.com/questions/7878398/how-to-extract-an-arbitrary-line-of-values-from-a-numpy-array numpy array along such a line More generally along a path polygon I have used slicing and indexing before but I can't seem to..
Python: suggestions to improve a chunk-by-chunk code to read several millions of points http://stackoverflow.com/questions/12769353/python-suggestions-to-improve-a-chunk-by-chunk-code-to-read-several-millions-of liblas import file as lasfile from shapely.geometry import Polygon from matplotlib.nxutils import points_inside_poly # open shapefile..
IOError: [Errno 13] Permission denied when trying to open hidden file in “w” mode http://stackoverflow.com/questions/13215716/ioerror-errno-13-permission-denied-when-trying-to-open-hidden-file-in-w-mod
Data binning: irregular polygons to regular mesh http://stackoverflow.com/questions/13934959/data-binning-irregular-polygons-to-regular-mesh count on that. You won't need anything other than box and Polygon from shapely.geometry. For each pixel find the polygons that.. box of each polygon. from shapely.geometry import box Polygon for pixel in pixels # say the pixel has llx lly urx ury values... of coordinates # x0 y0 ... named ``xy``. polygon_shape Polygon xy pixel_value polygon_shape.intersection pixel_shape .area..
matplotlib change linewidth on line segments, using list http://stackoverflow.com/questions/19862011/matplotlib-change-linewidth-on-line-segments-using-list plt.subplots ax.add_collection lines ax.autoscale plt.show Polygon Example import numpy as np import matplotlib.pyplot as plt np.random.seed..
Making rectangle move across screen with graphics file http://stackoverflow.com/questions/20110062/making-rectangle-move-across-screen-with-graphics-file graphics file from graphics import def main win GraphWin Polygon 500 500 r Rectangle Point 10 500 Point 150 450 r.draw win while..
http://stackoverflow.com/questions/3654289/scipy-create-2d-polygon-mask Create 2D Polygon Mask I need to create a numpy 2D array which represents a binary..
how to calculate the area of a polygon on the earth's surface using python http://stackoverflow.com/questions/4681737/how-to-calculate-the-area-of-a-polygon-on-the-earths-surface-using-python of the state of Colorado in GeoJSON format type Polygon coordinates 102.05 41.0 102.05 37.0 109.05 37.0 109.05 41.0.. Shapely to find the area of any projected polygon co type Polygon coordinates 102.05 41.0 102.05 37.0 109.05 37.0 109.05 41.0.. geometric object and take the area x y pa lon lat cop type Polygon coordinates zip x y from shapely.geometry import shape shape..
Best Python GIS library? [closed] http://stackoverflow.com/questions/7157076/best-python-gis-library geometry and determine which points are inside a Polygon using the Union function I run into problems but the Python..
Make an animated wave with drawPolyline in PySide/PyQt http://stackoverflow.com/questions/9465047/make-an-animated-wave-with-drawpolyline-in-pyside-pyqt QMainWindow.__init__ self parent def poly self pts return QPolygonF map lambda p QPointF p pts def paintEvent self event painter.. 0 280 0 430 0 580 0 680 0 780 0 def poly self pts return QPolygonF map lambda p QPointF p pts def paintEvent self event painter.. . This QThread would emit a custom signal like waveUpdate QPolygonF . When you start this thread it would do the loop and handle..
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