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| bio | website | |
|---|---|---|
| location | Sweden | |
| age | ||
| visits | member for | 1 year, 2 months |
| seen | 46 mins ago | |
| stats | profile views | 53 |
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1d |
revised |
What are the most common pitfalls awaiting new users? Edited/improved the links. They were formatted as to force a reload, now the internal links do not require a reload. |
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May 21 |
comment |
How can I detect an ellipse in a photo? What I can think of right now: try to isolate the ellipse e.g. through Image[
ImageData@EdgeDetect[pic] -
ImageData@EdgeDetect[pic, "StraightEdges" -> 0.2]] and then apply MorphologicalComponents and then on each component (one will be the ellipse, you may be able to delete the other somehow) use ComponentMeasurements. Look in the documentation for the properties that it can give you, that you may want, e.g. best fit ellipse semiaxes and so on. |
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May 20 |
awarded | Citizen Patrol |
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May 14 |
revised |
Saddle Point in Matrix added 18 characters in body |
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May 14 |
revised |
Saddle Point in Matrix edited body |
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May 14 |
answered | Saddle Point in Matrix |
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May 12 |
comment |
Track object movement kguler's answer to that question does not use the parametric equations. As far as you know how your object is going to translate and rotate, you can find the trace his way without resorting to image processing or knowing the math. |
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May 11 |
comment |
How do I draw a hemisphere? Well, it just doesn't work with two identical points... but using e.g. Tube[{{0, 0, 0}, {10^(-10), 0, 0}}, {0, 1}] one can get the right shape even in v9 |
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May 9 |
awarded | Talkative |
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May 9 |
comment |
Detection of horizontal lines in an image ImageLines also changed between 9.0.0 and 9.0.1 e.g. in this question it turned out that was the difference between something worked and something that didn't: mathematica.stackexchange.com/questions/21059/… |
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May 5 |
awarded | Enthusiast |
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Apr 27 |
revised |
How to extract phase angle from sinusoid added 154 characters in body |
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Apr 27 |
revised |
How to extract phase angle from sinusoid added 31 characters in body |
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Apr 27 |
revised |
How to extract phase angle from sinusoid added 8 characters in body |
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Apr 26 |
answered | How to extract phase angle from sinusoid |
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Apr 25 |
comment |
Error messages in importing data file Well, but if you put the file in My Documents and you can see the file with FileNames[] then works when you try to import it without entering a path, just Import[filel], right? |
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Apr 25 |
comment |
Error messages in importing data file What happens if you do SetDirectory["C:\\Documents and Settings\\IW\\My Documents\\Download"] and then FileNames[]? If the path is right, you should see a list of files and VDS.csv amongst them. I'm not sure how to interpret the error you've given. |
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Apr 25 |
comment |
How can a 3DBarChart be made to be fixed size and proportions? Use ImageSize to tell Mma what the width of the final output should be. For example: Export["~/Desktop/plot.png",ImageSize->730], will this work for you? Perhaps you did not want to export the graphics, in that case you apply ImageSize-> directly on the BarChart command I think. |
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Apr 24 |
answered | Error messages in importing data file |
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Apr 24 |
comment |
Error messages in importing data file The URL appears to be wrong. |
