Is matlab function distance is broken ?

Hello,

I try to calculate the distance between two points on a sphere. It seems that the function distance is built-in https://www.mathworks.com/help/map/ref/distance.html

But I'm unable to make it work, even the examples in the doc seem to not work :

arclen = distance('gc',[37,-76],[37,-9])
arclen = distance('rh',[37,-76],[37,-9])

I always have this error :

Check for missing argument or incorrect argument data type in call to function 'distance'.

I even tried syntax like that :

[arclen,az] = distance('gc',[37,-76],[37,-9])

But nothing seems to work, why ? I'm using Matlab R2020a, is it deprecated ?

[Ameer Hamza]

It works fine on my system. Can you show the output of

which distance

[Aymeric Ferreira]

I receive this output

>> which distance
'distance' not found.

Here is my full version

>> ver
-----------------------------------------------------------------------------------------------------
MATLAB Version: 9.8.0.1380330 (R2020a) Update 2
MATLAB License Number:
Operating System: Linux 4.19.0-9-amd64 #1 SMP Debian 4.19.118-2 (2020-04-29) x86_64
Java Version: Java 1.8.0_202-b08 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
-----------------------------------------------------------------------------------------------------
MATLAB                                                Version 9.8         (R2020a)
Simulink                                              Version 10.1        (R2020a)
Control System Toolbox                                Version 10.8        (R2020a)
Curve Fitting Toolbox                                 Version 3.5.11      (R2020a)
DSP System Toolbox                                    Version 9.10        (R2020a)
Image Processing Toolbox                              Version 11.1        (R2020a)
Instrument Control Toolbox                            Version 4.2         (R2020a)
Optimization Toolbox                                  Version 8.5         (R2020a)
Parallel Computing Toolbox                            Version 7.2         (R2020a)
Signal Processing Toolbox                             Version 8.4         (R2020a)
Statistics and Machine Learning Toolbox               Version 11.7        (R2020a)
Symbolic Math Toolbox                                 Version 8.5         (R2020a)

[Ameer Hamza]

You need mapping toolbox to use this function: https://www.mathworks.com/products/mapping.html

[Aymeric Ferreira]

Thank you, I didn't see it.

How I can accept your answer ?

[Ameer Hamza]

Aymeric, I added it as an answer. You can accept it.

Answer 1

[Ameer Hamza]

You need mapping toolbox to use this function: https://www.mathworks.com/products/mapping.html

Answer 2

[Mark Brandon]

It's your install.

Screen grab from those commands on my 2020a Update 2

un-install and clean install again?

good luck. MB