MATLAB Answers

Simple question regarding "distance" function

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QIAO WANG
QIAO WANG on 9 Apr 2020
Commented: QIAO WANG on 14 Apr 2020
Hi seniors
I've got matlab 2020a in my desktop. When I wanted to use distance, an error occured saying that no such function exists. Before, I was using this fuction in 2018a on another PC and it's working fine. I do find this function in 2020a documents https://uk.mathworks.com/help/map/ref/distance.html, however, the weird thing is when I type help distance in my own PC, it says no such document.
What should I do in order to use this in matlab 2020a?
Thank you in advance.

Accepted Answer

Star Strider
Star Strider on 9 Apr 2020
Type:
ver
in your Command Window to see if the Mapping Toolbox is installed. It should be listed.
If it is not, and you have a license for it, use the Add-On Explorer to download it and install it.
If it is, first run:
restoredefaultpath
rehash toolboxcache
then try again and see if that solves the problem.
If it does not, use the telephone handset icon in the upper right corner of this page to request Technical Support.
  8 Comments
QIAO WANG
QIAO WANG on 14 Apr 2020
Thank you Cam. That's a good advice with a useful link. Indeed, not every distance function is useful to me and it looks like only the one in mapping toolbox is helpful since I want to calculate the sphere distance with latitude and logitude as input parameters.

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More Answers (1)

jessupj
jessupj on 9 Apr 2020
from that link, it looks like the distance function is part of a toolbox.
in my 2019b, distance is available from several toolboxes.
>> help distance
'distance' requires one of the following:
Antenna Toolbox
Automated Driving Toolbox
Communications Toolbox
Computer Vision Toolbox
Mapping Toolbox
Navigation Toolbox
Phased Array System Toolbox
Sensor Fusion and Tracking Toolbox
  1 Comment
QIAO WANG
QIAO WANG on 9 Apr 2020
Thank you for this info.
I didn't realize it belongs to a toolbox. From what you have listed, it's supposed to work with Communications Toolbox which I have in my list but I don't have the Mapping Toolbox.

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