input arguments must be scalar matlab error

I have written a code in it is telling above error in part mentioned below

NB=max(size(Y));
H=zeros(2:NB,2:NB);
N=zeros(NG+1:NB,NG+1:NB);
L=zeros(2:NB,NG+1:NB);
M=zeros(NG+1:NB,2:NB);

Plz. reply fast

[Jan]

Please post the complete error message. Most of all the line, which causes the error, would be nice to know.

And before posting the error message, read it carefully. "The inputs arguments must be scalar". Are the used inputs arguments scalars?

[SAURABH KUMAR]

COMPLETE ERROR MESSAGE; Warning: Input arguments must be scalar. > In harmonic_load_flow at 145 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 145 In HLFA at 8 Elapsed time is 0.001287 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 146 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 146 In HLFA at 8 Elapsed time is 0.000892 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 147 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 147 In HLFA at 8 Elapsed time is 0.000759 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 148 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 148 In HLFA at 8 Elapsed time is 0.000757 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 145 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 145 In HLFA at 8 Elapsed time is 0.000769 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 146 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 146 In HLFA at 8 Elapsed time is 0.000687 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 147 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 147 In HLFA at 8 Elapsed time is 0.000747 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 148 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 148 In HLFA at 8 Elapsed time is 0.000836 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 145 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 145 In HLFA at 8 Elapsed time is 0.000862 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 146 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 146 In HLFA at 8 Elapsed time is 0.001222 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 147 In HLFA at 8 Warning: Input arguments must be scalar. > In harmonic_load_flow at 147 In HLFA at 8 Elapsed time is 0.001227 seconds. Warning: Input arguments must be scalar. > In harmonic_load_flow at 148 In HLFA at 8

Answer 1

[Guillaume]

doc zeros

And look at the examples

[SAURABH KUMAR]

Plz elaborate your answer

[Jan]

Simply type the command "doc zeros" in the command line. The help text for the zeros command ist shown. Read it carefully. You will find, that scalars are expected as inputs (as the error message mentions clearly). You code zeros(2:NB,2:NB) contains vectors as inputs, not scalars.

Because this is not the correct syntax to call zeros we cannot guess, what you want to achieve.

[SAURABH KUMAR]

HLFA 8

[V Vh Ih Vthd Ithd Irms Vrms Irms1]=harmonic_load_flow(AA,BUS,XX);
harmonic_load flow
145 tic;H=zeros(2:NB,2:NB);toc
146 tic;N=zeros(NG+1:NB,NG+1:NB);toc
147 tic;L=zeros(2:NB,NG+1:NB);toc
148 tic;M=zeros(NG+1:NB,2:NB);toc

This part of code gives a 2*2 matrix for 5 bus system.Plz also suggest how to modify it.

[Guillaume]

As you've been told (twice now), look up the documentation of zeros and pay particular attention to the examples.

The error message is very clear. You must pass scalar values.

Because you're failing at very basic matlab, I would recommend you also go through the getting started tutorial which also teaches how to use zeros.

[Temesgen Gelaw]

Instead of H=zeros(2:NB,2:NB) use H=zeros([2:NB 2:NB])

[Walter Roberson]

No, it would be either

H = zeros(NB, NB);

or

H = zeros(NB-2+1, NB-2+1);