Exceeds the number of array elements (0).

Question

Neda Deljavan 2023-1-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1899875-exceeds-the-number-of-array-elements-0

编辑： Voss 2023-2-7

采纳的回答： Voss

在 MATLAB Online 中打开

Hi everyone,

I have got the error in the code below, What should I do to fix it?

Code

% convert finite values to indices between 1 and map length
n = size(map, 1);
inds = (img(valid)-bounds(1))/(bounds(end)-bounds(1))*(n-1);
inds = floor(min(max(inds, 0), n-1))+1;

Error

Index exceeds the number of array elements (0).
Error in double2rgb (line 44)
ins = (img(valid)-bounds(1))/(bounds(end)-bounds(1))*(n-1);

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Answer 1

Voss 2023-1-24

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1899875-exceeds-the-number-of-array-elements-0#answer_1155375

Either img or bounds (or both) is empty.

Check img and bounds and figure out why one or both is not what you expect.

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Neda Deljavan 2023-1-27

在 MATLAB Online 中打开

Due to wij is NaN.

I fixed the problem of wij, but I got the error in the next step which is:

Code:

%%  step24: Plotting a Functional Network
figure
hold on;
% ind=find(isnan(wij));
% wij(ind)=0.01;
for ll = 1 : length(links)  %% plotting links
    line([EEG.chanlocs(links(ll,1)).X, EEG.chanlocs(links(ll,2)).X], [EEG.chanlocs(links(ll,1)).Y, EEG.chanlocs(links(ll,2)).Y], 'LineWidth', wij(ll), 'Color', rgb(ll,:) );
end
colormap(jet);
% colorbar
for nn = 1 : 4             %% plotting nodes
    plot(EEG.chanlocs(nn).X, EEG.chanlocs(nn).Y, 'ro', 'MarkerSize', st(nn), 'MarkerFaceColor', 'y')
    text(EEG.chanlocs(nn).X+0.5, EEG.chanlocs(nn).Y, EEG.chanlocs(nn).labels, 'FontSize', 11);
end
view([270 90]);             %% rotating to vertical view
axis equal; axis off;
set(gcf, 'units','normalized','outerposition',[0 0 1 1]) %EXPANDING FIGURE ON SCREEN

Error:

Index in position 1 exceeds array bounds (must not exceed 1).
Error in NEW1 (line 452)
line([EEG.chanlocs(links(ll,1)).X, EEG.chanlocs(links(ll,2)).X], [EEG.chanlocs(links(ll,1)).Y, EEG.chanlocs(links(ll,2)).Y], 'LineWidth', wij(ll),
'Color', rgb(ll,:) );

Neda Deljavan 2023-2-7

在 MATLAB Online 中打开

After the section above, for running code below I've got an error, what's the problem?

Code:

for ll = 1 : length(links)  %% plotting links
    line([EEG.chanlocs(links(ll,1)).X, EEG.chanlocs(links(ll,2)).X], [EEG.chanlocs(links(ll,1)).Y, EEG.chanlocs(links(ll,2)).Y], 'LineWidth', wij(ll), 'Color', rgb(ll,:) );
end
colormap(jet);
% colorbar
for nn = 1 : 4             %% plotting nodes
    plot(EEG.chanlocs(nn).X, EEG.chanlocs(nn).Y, 'ro', 'MarkerSize', st(nn), 'MarkerFaceColor', 'y')
    text(EEG.chanlocs(nn).X+0.5, EEG.chanlocs(nn).Y, EEG.chanlocs(nn).labels, 'FontSize', 11);
end
view([270 90]);             %% rotating to vertical view
axis equal; axis off;
set(gcf, 'units','normalized','outerposition',[0 0 1 1]) %EXPANDING FIGURE ON SCREEN

Error:

Error using line
Value should be a finite number greater than 0
Error in NEW1 (line 452)
line([EEG.chanlocs(links(ll,1)).X, EEG.chanlocs(links(ll,2)).X], [EEG.chanlocs(links(ll,1)).Y, EEG.chanlocs(links(ll,2)).Y], 'LineWidth', wij(ll),
'Color', rgb(ll,:) );

Thanks in advance for your help.

Bests,

Neda

Voss 2023-2-7

编辑：Voss 2023-2-7

在 MATLAB Online 中打开

My guess is that wij(ll) is NaN or Inf or a non-positive number.

You can see below that those cases throw the error you got:

try
    line([1 2],[1 2],'LineWidth',NaN)
catch e
    delete(gca())
    disp(e.message);
end
Value should be a finite number greater than 0
try
    line([1 2],[1 2],'LineWidth',Inf)
catch e
    delete(gca())
    disp(e.message);
end
Value should be a finite number greater than 0
try
    line([1 2],[1 2],'LineWidth',0)
catch e
    delete(gca())
    disp(e.message);
end
Value should be a finite number greater than 0
try
    line([1 2],[1 2],'LineWidth',-1)
catch e
    delete(gca())
    disp(e.message);
end
Value should be a finite number greater than 0