Load data into workspace failure (BETA units)

Question

Henrik Schädlich 2017-10-23

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/362711-load-data-into-workspace-failure-beta-units

回答： Henrik Schädlich 2017-10-23

Hello, I want to load a mat-file into my workspace. The file is attached. I think it is from an older matlab version not quite sure yet. My problem is that it can't be loaded into the workspace and I don't know why. Maybe you have an idea.

xp=0;
yp=0;
xm=0;
ym=0;
load secman
bmL=33.5; % BM length in humans (mm) = BETA unit
bmw_man=0;
load bmw_man.mat -ascii  % data are in BETA units 
x=bmL*bmw_man(:,1);  
y=bmL*bmw_man(:,2);
figure(1)
subplot(211)
axis([0,33.5,-2,2]);
plot(xp*bmL, yp*bmL, xm*bmL, -ym*bmL, (0:.05:1)*bmL, zeros(size(0:.05:1)),'w')
title('Radii of human cochlea scalae')
% xlabel('Distance from stapes [mm]') 
ylabel('Radius [mm]') 
subplot(212)
axis([0, 33.5, 0, 0.6]);
plot(x,y,'-red',x,y,'.c5')
title('Basilar membrane width in humans');
ylabel('Witdh in mm');
xlabel('Length in mm')

What exactly is the meaning of "% data are in BETA units"? Best regards Henrik

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Answer 1

Walter Roberson 2017-10-23

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/362711-load-data-into-workspace-failure-beta-units#answer_287197

编辑：Walter Roberson 2017-10-23

在 MATLAB Online 中打开

BM sounds like it might be Basilar Membrane. The code suggests that a standard length for one of 33.5 mm is being used, and that the bmw_man entries are multiples of that 33.5 mm.

I do not have any problem with your code and those files until

plot(x,y,'-red',x,y,'.c5')

You cannot code a line size as part of a linespec.

plot(x, y, '-red', x, y, '.c', 'linewidth', 5)