Asked by Samaneh Arzpeima
on 15 Apr 2019

I have an inclined surface and 20 different specified points(x,y,z) on it.for each station I have a set of (time, amplitude) data i.e. a wave. I need to plot each wave at each related point. so a surface with 20 waves on it.

I have no idea how to do it, subplot probably won't work because I need to plot on specified points.

please help!

Answer by David Wilson
on 19 Apr 2019

Here is a mock up solution.

Code is: below. I've used part of your data, but I've made up some similar data (using a sinc function) for the other trends. I've also edited your data file and stripped the header comments.

%% plot mini plots

fname = 'str-10dep00.dat';

fid = fopen(fname);

A = fscanf(fid,'%f');

fclose(fid);

A = reshape(A, 8,length(A)/8)';

t = A(:,1);

plot(t,A(:,3),'.-');

Now I've made a grid plot, and plotted the trends in row order. You will read each from a different file of course.

%% generate some interesting data

%% Now try grid

y = 2*[0:4]; z = 2*[0:-1:-5];

[Y,Z] = meshgrid(y,z);

dum = sinc(t/10);

D = [A(:,2:end), dum.*randn(length(t),23)*0.1] % store in row order

plot(Y,Z,'bo','MarkerFaceColor',[0.4588 0.7333 0.9922]);

axis(2*[-1,5,-6,1]);

xlabel('x'); ylabel('z')

hold on

for k=1:size(D,2)

s = D(:,k);

i = mod(k-1,5)+1;

j = -floor((k-1)/5);

x = (2*i-2)+t/t(end);

y = 2*j+ s/range(s);

plot(x,y,'-','color',[0.3176 0.6157 0.6863])

end

hold off

Samaneh Arzpeima
on 19 Apr 2019

Thank You

The figure is almost what I need.

just a few questions

1.after running the " plot mini plots " in a folder that I have all my .dat files ,I have got no value for A and t, just [ ]

2.I don't have toolbox for sinc function

can I replace it with sinct = @(t) sin(pi*t+1E-8)./(pi*x + 1E-8);

Samaneh Arzpeima
on 19 Apr 2019

@David Wilson

Hello again

for the "plot mini plots " part in your code, I changed it.

with the code in bellow, I did read all the .dat file and got a matrix(=Fault) with a 3000*8*30 size.

t=Fault(:,1,i) and the amplitude of each wave is Fault(:,3,i)

idir = './Site/'; %directory containing the all .dat file

% This Fault matrix contains all the data of all site.dat files

Fault = [];

% read all the dat files

files = dir([idir,'*.dat']);

% read the Fault_Station.txt file to get the coordinate

filename = 'FAULT_STATIONS.txt';

[Fault_Cor] = importdata(filename);

% number of rows in one site*.dat file

Number_of_rows = 30021;

for i = 1:numel(files)

file_name = [cell2mat(Fault_Cor.textdata(i,4)) '.dat'];

T = importfile1(file_name, 22,Number_of_rows );

Fault(:,:,i) = table2array(T);

end

t = [];

y = [];

for i = 1:size(Fault,3)

t1 = Fault(:,1,i); % 3000*1 double

y1 = Fault(:,3,i); % 3000*1 double

t = [t; t1]; % 90000*1 double

y = [y; y1]; % 90000*1 double

end

now I am totally lost!

don know what to do next, I am not sure if I understood your sinc/dum or D. Maybe you cut the header in D...

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