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Sep
25
revised Can I get the curvature at any point of a random curve?
added 3 characters in body
Sep
25
answered Can I get the curvature at any point of a random curve?
Sep
19
comment Detect buildings in cadastral map as polygons
Sorry, that comment wasn't about your English (which is perfectly fine) but about my lack of knowledge regarding maps&projections.
Sep
19
comment Detect buildings in cadastral map as polygons
I understood about half of those words. Enough to know I can't help you with that...
Sep
18
comment Detect buildings in cadastral map as polygons
Sidenote: I'm 99% certain that image processing is the wrong solution to this problem. The OpenStreetMap web interface has an "Export" button that exports a raw XML file (i.e. not a graphics file but a data file containing semantic data like "house" and "way" and longitudes/latitudes). Try to import that, everything else is a hack.
Sep
18
answered Detect buildings in cadastral map as polygons
Sep
14
awarded  Enlightened
Sep
14
awarded  Nice Answer
Sep
14
comment Angle between two areas of an image of a 2D FFT
@shrx: I noticed and haven't found out 100% why yet. I'm guessing the "real" peak isn't at an integer location in the fourier transform. But since that wasn't part of the original question, I didn't investigate further...
Sep
14
answered Angle between two areas of an image of a 2D FFT
Sep
11
revised How can this resampling code be made faster?
deleted 120 characters in body
Sep
11
answered How can this resampling code be made faster?
Sep
11
answered How do I rotate a curve?
Sep
10
awarded  Popular Question
Sep
2
comment How to avoid “Quit[]” to execute notebook multiple times
Try Clear[RefinedImg,OriginalImg]. The left side of RefinedImg[t] = ... gets evaluated, too, so on the second run, it means Image[...][t] = .... See also this.
Aug
31
revised Area of a surface spanned by 2 parametric curves
added 94 characters in body
Aug
31
answered Area of a surface spanned by 2 parametric curves
Aug
27
comment How to detect loops in a vector field?
@Jens: Sure, "contains loops" would have to be interpreted as e.g. "if you follow the vector field, you come back to your point of origin again, up to some numerical error epsilon". But isn't that true of practically any boolean property when you're doing numerical calculations?
Aug
27
awarded  Nice Answer
Aug
27
revised How to detect loops in a vector field?
added 1517 characters in body