Error using * Inner matrix dimensions must agree.

error in matrix

[Walter Roberson]

Guide to Tags

[houssem alimi]

???

[Walter Roberson]

Please explain what your tag of tjks signifies. Does it have something to do with toxicity? Is it a topic in graph theory ? Does it stand for "Tertiary Jittered Kalman Scenting" ?

[houssem alimi]

i don't found the exactly tag but i use unscented kalman filter

[Walter Roberson]

Perhaps it would make sense to simply use the tag "matrix dimensions must agree", and to remove tjks as I suspect tjks will not mean anything to anyone other than you.

Tags are like topic indexes for card catalogs.

[houssem alimi]

how this code can be solved??

[Walter Roberson]

dbstop if error

run the code. when it stops look at the sizes of all of the variables involved and extract portions of the expression until you figure out which multiplication is triggering the error and what the sizes are of the left and right. Then you trace backwards in the code to figure out why they got to be that size.

Answer 1

[madhan ravi]

Use size() to check the sizes of the variables if they have compatible sizes ( https://www.mathworks.com/help/matlab/matlab_prog/compatible-array-sizes-for-basic-operations.html#responsive_offcanvas ) .

[houssem alimi]

size(chi_m(1,i))

ans =

1 1

size(x_m)

ans =

4 9

size(y_m)

ans =

2 4

size(yt)

ans =

2 4