Error using cat Dimensions of arrays being concatenated are not consistent. Error in cell2mat m{n} = cat(1,c{:,n});

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AMANATH Hassan 2024-5-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2121506-error-using-cat-dimensions-of-arrays-being-concatenated-are-not-consistent-error-in-cell2mat-m-n

评论： Peter Perkins 2024-5-29

dataTable.mat

I'm trying to make an error bar plot with experimental data. i have used cell2table function to make a table some of the values on the table have [x,x] values like this with corresponding [y,y] and some of them are single values regardless i need to plot all of them against each other along with their error bars. but i keep getting this error on matlab.

% Scatter plot with error bars

figure;

errorbar(cell2mat(dataTable.FrictionAngle), cell2mat(dataTable.Cohesion), cell2mat(dataTable.Cohesion) - cell2mat(dataTable.CohesionMin), cell2mat(dataTable.CohesionMax) - cell2mat(dataTable.Cohesion), cell2mat(dataTable.FrictionAngle) - cell2mat(dataTable.FrictionAngleMin), cell2mat(dataTable.FrictionAngleMax) - cell2mat(dataTable.FrictionAngle), 'o');

please help

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AMANATH Hassan 2024-5-22

在 MATLAB Online 中打开

Error using cat

Dimensions of arrays being concatenated are not consistent.

Error in cell2mat (line 83)

m{n} = cat(1,c{:,n});

Error in phiC (line 113)

^this is the whole message in the command window

AMANATH Hassan 2024-5-22

I attached the file:)

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采纳的回答

Voss 2024-5-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2121506-error-using-cat-dimensions-of-arrays-being-concatenated-are-not-consistent-error-in-cell2mat-m-n#answer_1461836

编辑：Voss 2024-5-22

在 MATLAB Online 中打开

dataTable.mat

load dataTable

NC = cellfun(@numel,dataTable.Cohesion);

Cmin = repelem(dataTable.CohesionMin,NC,1);

Cmax = repelem(dataTable.CohesionMax,NC,1);

NFA = cellfun(@numel,dataTable.FrictionAngle);

FAmin = repelem(dataTable.FrictionAngleMin,NFA,1);

FAmax = repelem(dataTable.FrictionAngleMax,NFA,1);

FA = [dataTable.FrictionAngle{:}].';

C = [dataTable.Cohesion{:}].';

% Scatter plot with error bars

figure

errorbar(FA,C,C-Cmin,Cmax-C,FA-FAmin,FAmax-FA,'o');

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Voss 2024-5-25

在 MATLAB Online 中打开

MarsRegolith.mat

The types and sizes of data stored in this table are quite different than the original table, so the code will be different.

Also, in this table, Cohesion is the same as CohesionMin is the same as CohesionMax, except that Cohesion is stored in a cell array. Same for FrctionAngle/Min/Max. Therefore the errorbars all have zero length.

load MarsRegolith

MarsRegolith

MarsRegolith = 8x7 table

Data FrictionAngle Cohesion CohesionMin CohesionMax FrictionAngleMin FrictionAngleMax _____________________________________ __________________________ _________________________ ______________ ______________ ________________ ________________ {'MPF Sojourner: Cloddy' } {[31.4000]} {[42.2000]} {[-0.3400]} {[0.5700]} -0.34 0.57 -0.34 0.57 31.4 42.2 31.4 42.2 {'MPF Sojourner: Drift' } {[15.1000]} {[33.1000]} {[ 0.1800]} {[0.5300]} 0.18 0.53 0.18 0.53 15.1 33.1 15.1 33.1 {'Viking Lander 1: Drift' } {[17.6000]} {[20.4000]} {[ 0.4000]} {[2.8000]} 0.4 2.8 0.4 2.8 17.6 20.4 17.6 20.4 {'Viking Lander 1: Blocky' } {[28.4000]} {[33.2000]} {[ 2.4000]} {[7.8000]} 2.4 7.8 2.4 7.8 28.4 33.2 28.4 33.2 {'Viking Lander 1 and 2: Rocks' } {[ 40]} {[ 60]} {[ 1000]} {[ 10000]} 1000 10000 1000 10000 40 60 40 60 {'Viking Lander 2: Crusty to Cloddy'} {[29.8000]} {[39.2000]} {[ 0.3000]} {[1.9000]} 0.3 1.9 0.3 1.9 29.8 39.2 29.8 39.2 {'MPF Sojourner Sand' } {[ 30]} {[ 30]} {[ 0]} {[ 1]} 0 1 0 1 30 30 30 30 {'Phoenix' } {[ 29]} {[ 47]} {[ 0.2000]} {[1.2000]} 0.2 1.2 0.2 1.2 29 47 29 47

C = cell2mat(MarsRegolith.Cohesion);

FA = cell2mat(MarsRegolith.FrictionAngle);

Cmin = MarsRegolith.CohesionMin;

Cmax = MarsRegolith.CohesionMax;

FAmin = MarsRegolith.FrictionAngleMin;

FAmax = MarsRegolith.FrictionAngleMax;

figure

errorbar(FA,C,C-Cmin,Cmax-C,FA-FAmin,FAmax-FA,'o');

AMANATH Hassan 2024-5-25

Okay, thank you once again :) you are so helpful!!

Peter Perkins 2024-5-29

Voss said, "The types and sizes of data stored in this table are quite different than the original table"

One big difference is that in dataTable, Cohesion and FrictionAngle are "ragged", with some rows having two values and others only one, while in MarsRegolith, those both have two values in every row. Using cell arrays is a necessary complication in the former, while it is just overcomplicating things in the latter.

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