MATLAB: How can i solve this error

for loop

Hi . i wanna write h(x) at a for loop. but i have error .

error is : '' Index in position 1 exceeds array bounds (must not exceed 1). "

x=1:0.1:6;
for i=1:0.1:6
h(i,:)=z2+(x(i,:)-ls)*z4;
end

Best Answer

You should use this:

x=1:0.1:6;
for i=1:numel(x)
h(i,:)=z2+(x(i)-ls)*z4;
end

or even without ':'

x=1:0.1:6;
for i=1:numel(x)
h(i)=z2+(x(i)-ls)*z4;
end

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MATLAB: What is missing at fzero command? (Data.xlsx at the attachment)

Use a function instead of an anonymous function, such that you can use the debugger for further investigations:

function x = hiz_fun_Func(hiz, inclined_road, total_loss, h)
x = (1/2) * 1750 * hiz(inclined_road(h-1))^2 - total_loss(hiz) - (1/2)*1750*hiz.^2;
end

And provide only the parameters by an anonymous function:

hiz_fun = @(hiz) hiz_fun_Func(hiz, inclined_road, total_loss, h)

Now set a breakpoint in hiz_fun_Func to check, if inclined_road or total_loss is affected by the exceeding index.

Sorry, this will not help directly. Do this for the other anonymous functions also. I guess, the core of the problem is:

hiz + hiz(inclined_road(h-1))

in the definition of WL. The nested anonymous functions impede the debugging tremendously. It is a good idea to avoid such troubles by using them only to provide the parameters, while the actual code is written as functions, which can be examined using the debugger.

MATLAB: How to set maximum and minimum limit of signal in MATLAB code.

Hi Usman, you can use one of the codes below. However, I recommend the first one, because no loop is necessary here.

x1Max = 3;
x1Min = 0;
x2Max = 2.5;
x2Min = -1;
x1(x1>x1Max) = x1Max;
x1(x1<x1Min) = x1Min;
x2(x2>x2Max) = x2Max;
x2(x2<x2Min) = x2Min;
x3 = x1 + x2;

x1Max = 3;
x1Min = 0;
x2Max = 2.5;
x2Min = -1;
x3 = zeros(length(x1),1);
for i = 1:length(x1)%or length x2 since they must have the same dimensions. 
    if x1(i)>x1Max
        x1(i) =  x1Max;
    elseif x1(i)<x1Min
        x1(i) = x1Min;
    end 
    if x2(i)>x2Max
        x2(i) =  x2Max;
    elseif x2(i)<x2Min
        x2(i) = x2Min;
    end
    x3(i) = x1(i)+x2(i);
end

Best Answer

Related Solutions

MATLAB: What is missing at fzero command? (Data.xlsx at the attachment)

MATLAB: How to set maximum and minimum limit of signal in MATLAB code.

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