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Weia Reinboud


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Last seen: 2 years ago |  Active since 2016

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Retired, interest in mathematical cartography and biomechanics

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Answered
image read and write problem
It works! (I don't see in the above where this same conversion is given.)

4 years ago | 0

Answered
image read and write problem
Problems are not yet over. I have written a Matlab programm which imread a tif, manipulates all pixels and makes an array 'cupol...

4 years ago | 0

Answered
image read and write problem
Thanks all! Things remain single when change of numbers is done within Matlab. And that's all I need. I did a test with changi...

4 years ago | 0

Question


image read and write problem
Sometimes imwrite and imread work OK, but often not. In that case in stead of numbers between 0 and 255 (RGB tif file) all n...

4 years ago | 1 answer | 0

1

answer

Answered
Properties of a video
I want to set the gridlines of a grid. Mathlab chooses 'nice' limits, but I want to do it myself. I cannot find where. Documenta...

5 years ago | 0

Answered
Properties of a video
Clear, thanks.

5 years ago | 0

Question


Properties of a video
See attached picture. Several issues. 1:The video is OK but as you see numbers along the axes are not included. How to fix that...

5 years ago | 3 answers | 0

3

answers

Question


How does getframe work?
New project, new things to learn in Matlab, new problems. My previous (and first) project in Matlab led to an article which is i...

5 years ago | 1 answer | 0

1

answer

Answered
3D visibility in plot3
I found a way to circumvent the problems and to make a good enough illustration for my article. Thanks all!

5 years ago | 0

Question


3D visibility in plot3
Functions like mesh show only visible parts of a 3D figure, hiding parts around the corner. I have [x,y,z]-coordinates of a set ...

5 years ago | 1 answer | 0

1

answer

Answered
Taylor expansion with 2 variables
I overlooked 'syms'. So it works now. But now I have a new problem, the expansion is over 25000 signs long, too long for the com...

6 years ago | 0

Question


Taylor expansion with 2 variables
I have a long function and want to know its Taylor expansion, but it's a function with 2 variables f(g,h). I expect a summation ...

6 years ago | 2 answers | 0

2

answers

Question


highlighting point in 3D-graph
In a 3D-graph made with surf I like to highlight one point on the shown surface. I know (x,y,z) of that point, but that isn't a ...

6 years ago | 0 answers | 0

0

answers

Answered
export of scatter3 is rough
Using 'print' in the command window leads to disappearance of all my complaints. So: thanks! Strange that 'save as' in the p...

6 years ago | 0

Question


export of scatter3 is rough
Figures of plot and scatter3 look very different. I get very fine figures in a programm using plot, getting the best version via...

6 years ago | 2 answers | 0

2

answers

Answered
colouring dots in scatter3 according z-value
Excellent, it works! It does not look as code I could ever having been able to find by myself. Thank you very much.

6 years ago | 0

Answered
colouring dots in scatter3 according z-value
Yes I'd read that. But that means every dot has that color C, not that colors vary by the value of z. Or am I wrong?

6 years ago | 2

Question


colouring dots in scatter3 according z-value
plot3 gives colours according to height above the xy-plane. Is that possible with scatter3 too?

6 years ago | 3 answers | 0

3

answers

Question


I need a world coastlines database as text, how to make that out of the mapping module?
I have had one long ago, on an Atari! But lost it. It may be small, it is for a world map on A4 paper. I just need longitudes an...

7 years ago | 1 answer | 0

1

answer

Question


Use of own projection in mapping toolbox
The mapping toolbox contains many interesting features, but can they be used with other map projections? My research leads to a ...

8 years ago | 0 answers | 0

0

answers

Question


MIxed format in output, how to do that?
I have a big matrix and for my convenience I'ld like to see the columns formatted differently. Is that possible? First column as...

8 years ago | 0 answers | 0

0

answers

Question


Writing a variable and reading it elsewhere, how to do that?
After running a programm I have a the end a set of coordinates like Z=[0.4, 0.9; 1.3, 1.4; 2.0, 2.2] I like to use Z in another ...

8 years ago | 1 answer | 0

1

answer