MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

# how to rectify the index must be a positive integer or logical error?

Asked by PRIYANGA on 13 Dec 2012

I have to rectify the Error using Horzcat command.

domr=[6 7];

domg=[3 4];

domb=[2 ];

dom=horz(domr,domg,domb);

Then Decoding stage i got Error in ??? Attempted to access dompol1(-3,:); index must be a positive integer or logical.

Error in ==> DEIMGC at 12 D1=dompol1(fraco(4),:);

Error occurring in the following function arguemnts.....

[cimg1r]=deimgc(vqcode7r,dompool3r,gsize,scale);

[cimg1g]=deimgc(vqcode7g,dompool3g,gsize,scale);

[cimg1b]=deimgc(vqcode7b,dompool3b,gsize,scale);

how can I pass the negative values in this program or how to rectify the Negative Error?

## Products

Answer by Jan Simon on 13 Dec 2012
Edited by Jan Simon on 13 Dec 2012

You are asking for horzcat, but you call horz. The latter could be FEX: horz, but this is not clear.

Perhaps you want this:

```domr = [6 7];
domg = [3 4];
domb = [2 ];
dom  = horzcat(domr, domg, domb);
% or equivalent:
dom = [domr, domg, domb];
```

## 1 Comment

PRIYANGA on 13 Dec 2012

Ok Sir I accept that concatenation.

Now I want to Error rectification of Attempted to access dompol1(-3,:); index must be a positive integer or logical.

Error in ==> DEIMGC at 12 D1=dompol1(fraco(4),:);

Error occurring in the following function arguemnts.....

[cimg1r]=deimgc(vqcode7r,dompool3r,gsize,scale);

[cimg1g]=deimgc(vqcode7g,dompool3g,gsize,scale);

[cimg1b]=deimgc(vqcode7b,dompool3b,gsize,scale);

how can I pass the negative values in this program or how to rectify the Negative Error? or how can i convert the negative value to positive value?