how to iterate a code a certain number of times

Hello everyone

I have been devleoping a code for a kalman filter inside a mobile robot . The idea of this code is that it predicts and updates the position of the robot every 0.05 seconds up to 40 seconds. My code only calculates for one iteration while i need it to calculate for 800 iterations since there are 800 instances where the position needs to be calculated. I have tried putting it in a while loop but not sure as to why it is not working?. any help would be greatly appreciated. I have attached my code down below

Many Thanks

Daniel

[Mathieu NOE]

we need your mat files as well

[Daniel Pitigala]

Hi Mathieu

I'll send them down below

thanks

Daniel

Answer 1

[Pratyush Swain]

Hi Daneil,

I understand you are facing issue in your while loop, I have been able to reproduce the same error and make out a key observation:

The variable r1_real holds a constant value and cannot be used with parenthesis. This can be illustrated as follows:

The r1_real holds a single element and cannot be used as an array containing multiple elements, hence r1_real(1,k) throws error in the second iteration with k=2.

The usage of dot operator in the code implies you are treating your variables as array but please verify the type of value held by the variable. You can investigate the same by using leveraging the workspace or command window.

For more information, please refer to https://www.mathworks.com/help/matlab/learn_matlab/array-indexing.html.

Hope this helps.