Kurt
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Accept 5 answers given by other contributors
Awarded to Kurt on 08 Dec 2022
Feeds
propagateOrbit function hangs for no obvious reason
This is an interim solution until Mathworks modifies the propagateOrbit function. This is based on the code previously mentioned...
2 months ago | 0
Question
propagateOrbit function hangs for no obvious reason
When the propagateOrbit function is fed certain TLEs, it simply stalls instead of throwing an exception. Since the propagateOrb...
2 months ago | 1 answer | 0
1
answerHow to propagate orbits on a non-rotating axesm globe
SOLUTION: In order to convert a TLE set to ephemeris data, you must first read a TLE file and perform several coordinate transf...
2 months ago | 0
Question
How to propagate orbits on a non-rotating axesm globe
I used as my foundation the example found here: https://www.mathworks.com/help/map/plotting-a-3-d-dome-as-a-mesh-over-a-globe.h...
3 months ago | 1 answer | 0
1
answerQuestion
How do I align two 3D curves that are displaced in time?
I have two 3D curves (trajectories) that are nearly identical. One curve is a subset of the other, that is, its end point coordi...
4 months ago | 0 answers | 0
0
answersQuestion
How do you convert a surf object to an isosurface?
How to convert a regular surf surface (rectangular mesh) to a patch isosurface (triangular mesh)? I have seen how to go the o...
7 months ago | 1 answer | 0
1
answerQuestion
Matlab function gui_mainfcn.m crashes on feval
I am trying to work with the GRIB1 file reader found at this address: https://www.mathworks.com/matlabcentral/fileexchange/5370...
9 months ago | 1 answer | 0
1
answerQuestion
How to incorporate axesm-based maps in an app
I am interested in creating axesm-based maps: h = axesm('MapProjection','mercator') However, there appears to be no way to tie...
11 months ago | 1 answer | 0
1
answerHow to overlay a UIAxes surface on a UIFigure 3D image
It appears you can't get there from here usining geo data. I found another solution using a mesh: https://www.mathworks.com/mat...
12 months ago | 0
Question
Plot 3D Dome - no topo60c file available
I am using the example of how to plot a dome as a mesh over a globe, found here: https://www.mathworks.com/help/map/plotting-a-...
12 months ago | 1 answer | 0
1
answerQuestion
How to overlay a UIAxes surface on a UIFigure 3D image
I have two components, a UIFigure globe and a UIAxes hemisphere created with surf(). I want to overlay the surf object on the gl...
12 months ago | 1 answer | 0
1
answerQuestion
Upper limit on the number of UIAxes children allowed
I am plotting orbital data, using plot3 to progressively lengthen the orbital track of a spacecraft. plot3(earthMoon.UIAxes, x...
1 year ago | 2 answers | 0
2
answersQuestion
How to draw 2d compass in 3d UIAxes
Is it possible to use the compass() function to draw a compass rose in a UIAxes object? I don't care about the function depicted...
1 year ago | 1 answer | 0
1
answerQuestion
angle2dcm: How to reference direction cosine matrix output?
I have seen lots of discussion on how to call angle2dcm, but almost none on how to use it to transform the coordinates of an obj...
1 year ago | 1 answer | 0
1
answerQuestion
App Designer: How to add components that are not listed in the library
The App Designer Component Library contains a limited number of components to drag and drop. There are many more components and ...
1 year ago | 1 answer | 0
1
answerMatlab return C call by reference
The solution was to first load my Dynamic Link Libraries (DLLs). Then the Matlab calls to my library functions look like this:...
2 years ago | 0
| accepted
Question
Matlab return C call by reference
I am using a compiled C DLL library to compute various astronomical functions, for example time since epoch and ra/dec to az/el ...
2 years ago | 1 answer | 0
1
answerCall parfeval using global variables?
Using a combination of spmd and spmdIndex (NOT labIndex, which is obsolete), I was able to achieve what I wanted: setting the DO...
2 years ago | 0
| accepted
Question
Call parfeval using global variables?
I am using parfeval() to do multithread logic. I have 16 cores. The documention mentions listing the calling parameters as argum...
2 years ago | 2 answers | 0
2
answersClick on row in TextArea?
The "compose" approach reduced the formatting from about 7 minutess to 10 seconds. Thanks! I solved the TextArea size issue by ...
2 years ago | 0
| accepted
Question
Click on row in TextArea?
I have a GUI that contains a TextArea. I read in a file that is 20,000 x 16 and convert each row to a string, so the resulting t...
2 years ago | 2 answers | 0
2
answersQuestion
How to draw lines in UIFigure designed in App Designer that contains an image
I have seen many examples of how to draw a line in a plot; however, I am working with an App Designer object-oriented UIFigure. ...
2 years ago | 1 answer | 0
1
answerQuestion
Observation: sortrows() blows up when attempting to sort empty cells
This is more of an observation than a question, but it took me two days to figure it out. I am pre-allocating space for an arra...
2 years ago | 1 answer | 0
1
answerQuestion
How to do math using datetime objects including years
I want to compute the number of days, minutes and seconds since January 1st, 2000 (Julian days) up to a specific date such as Ju...
2 years ago | 3 answers | 0
3
answersQuestion
How to initialize a table column to a character array?
I have a table "filetext" which is 19343x46. I want to append a colum on the right containing the character array 'MET'. In othe...
2 years ago | 1 answer | 0
1
answerGUI loses state when destroyed and recreated
Found the solution. Change the GUI callback function to read as follows: function GUIButtonGroupSelectionChanged(app, event) % ...
2 years ago | 0
Question
GUI loses state when destroyed and recreated
This USED to work several days ago, but somehow I broke it. I have a GUI which I created in App Designer. The GUI is called fro...
2 years ago | 1 answer | 0
1
answerQuestion
How to convert datetime to datestr including day of year
I can convert a date string to a datetime object using datetime(), and convert that object back to a string using datestr(). How...
2 years ago | 1 answer | 0
1
answerQuestion
How do I add a draw rectangle function to an image app?
I used App Designer to create a frame containing an image. Now I want to draw a rectangle inside that image. None of the example...
2 years ago | 1 answer | 0
1
answerHow do I use uiopen in a class method?
Solution found: I needed a callback function.
2 years ago | 0
| accepted
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