Hello,
I understand that you want to create polylines with multiple segments using the nodes given in the .csv file and output the results to a tab limited .txt file. Please find the code below to achieve the same.
% Read the CSV file
data = readmatrix('Polylines.csv');
% Extract the X and Y coordinates from the data
x = data(:, 1);
y = data(:, 2);
% Determine the number of fracture traces in the dataset
numTraces = size(x, 1);
%%%%% Set the desired number of random fracture traces to select
numRandomTraces = 100; % Change this to your desired number
% Create a tab-delimited text file
outputFile = 'random_fracture_traces.txt';
fileID = fopen(outputFile, 'w');
for i = 1:numRandomTraces
%%%%% Change the upper bound to set the maximum number of nodes in a
% polyline
randomIndex = randi([2, 5]);
% Generate random indices for selecting fracture traces
randomIndices = randperm(numTraces, randomIndex);
trace_x = x(randomIndices);
trace_y = y(randomIndices);
% print the first node of the polyline
fprintf(fileID, '%.7f\t%.7f', trace_x(1), trace_y(1));
% print the rest of the nodes of the polyline
for j = 2:randomIndex
fprintf(fileID, '\t%.7f\t%.7f', trace_x(j), trace_y(j));
end
fprintf(fileID, '\n');
end
fclose(fileID);
The above code creates numRandomTraces number of random polylines such that each polyline has randomIndex number of nodes. You can change these variables as per your requirements.
You can refer to the following documents for more information on the code:
- https://www.mathworks.com/help/matlab/low-level-file-i-o.html
- https://www.mathworks.com/help/matlab/ref/randi.html
- https://www.mathworks.com/help/matlab/ref/randperm.html
Hope it helps.
