Monocular Visual Simultaneous Localization and Mapping Error: Dot indexing is not supported for variables of this type.

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Samantha Betts
Samantha Betts on 11 May 2021
Commented: Samantha Betts on 11 May 2021
Hi, I am trying to follow the Monocular Visual Simultaneous Localization and Mapping tutorial found here: https://www.mathworks.com/help/vision/ug/monocular-visual-simultaneous-localization-and-mapping.html
The code runs until frame 29 but then then crashed and produces the error message
* Encoding 2 images...done.
Finished creating the image index.
Dot indexing is not supported for variables of this type.
Error in helperAddLoopConnections (line 11)
imageSize = intrinsics.ImageSize;
Error in vSLAM (line 316)
[isLoopClosed, mapPointSet, vSetKeyFrames] = helperAddLoopConnections(mapPointSet, vSetKeyFrames,
validLoopCandidates, currKeyFrameId, currFeatures, currPoints, loopEdgeNumMatches);
and when I go to line 11 in the helperAddLoopConnections function provided in the examples folder the code shows
imageSize = intrinsics.ImageSize;
I've tried changing it to instrinsics(ImageSize) but then the code has the error that there is no variable called ImageSize...
Any help is appreciated, thanks!
  2 Comments
Samantha Betts
Samantha Betts on 11 May 2021
I am using R2020B, and I did not change the code, except when I tried to fix that error... is there a way to redownload the helperAddLoopConnections.m file? The one I have had the line imageSize = intrinsics.ImageSize; at line 11.
Thanks!

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Accepted Answer

Qu Cao
Qu Cao on 11 May 2021
The example has been updated over the past few releases. For 20b version, please check the following documentation:

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