why do i get this error "undefined function"

Undefined function or variable 'RaR'.

Error in Untitled2>calculate_roughness_L1A (line 56)
rough_param(:,1)=RaR;

Error in Untitled2 (line 41)
[rough_param]=calculate_roughness_L1A(ca1);
 

[Mehmed Saad]

what is RaR, is this variable defined in your code?

[Azhan Lazit]

average roughness

[Azhan Lazit]

imtotally newbie in matlab, ijust want to calculate roughness from image

[Mehmed Saad]

suppose average roughness in 0.7

RaR = 0.7;
rough_param(:,1)=RaR;

[Azhan Lazit]

i=1
RaR(i)=sum(sum(abs(roughness(:,:,i))))/n;

this what i write before that code

[Adam Danz]

Please provide the complete section of code starting where RaR is defined and ending at the line that causes the error.

Answer 1

[Adam Danz]

RaR could be a variable or a function, we don't know and neither does Matlab but you probably know whether it should be a function or a variable.

Either way, it's not defined. If I ask you A=5, A+B = ?? you couldn't answer it because you don't know what B is.

if RaR is a variable, give it a value.

RaR =  [whatever];

If RaR is a function saved to an m-file, make sure the m-file is on your matlab path. See

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