翻译I've created some Matlab code which anyone helping can run and see the problem.
When I run the following code, for each data point on my plot I seem to get all 15 labels instead of only 1 specific label.
So how do I get the Matlab data point labels correct for the following code?
Based on the the suggestions from my previous question, I did the following:
I replaced these two lines of code:
labels = num2str(test_vector_label,'F%d'); labels_cell = cellstr(labels);With this line of code as suggested:
labels_cell = strread(num2str(test_vector_label),'%s');Now there are two follow-up questions:
1) A warning appears stating that I should use textscan instead of strread:
labels_cell = textscan(num2str(test_vector_label),'%s');Then when I use textscan as in the above line of code above, I get an error?
"Error using text Cell array of strings may only contain string and numeric matrices"
"Error in Code_Test (line 46) text(x_val,y_val,labels_cell,'horizontal','left', 'vertical','bottom')"
2) How do I put a letter in front of the number labels? For example, in the original code I had put letter F followed by a number?
%--------------Randomly select training and testing data.----------- num_data = 35; data_idx = 1:35; train_data_idx_tmp = randsample(num_data,20) train_dataRand_idx = sort(train_data_idx_tmp) % Lia = ismember(A,B) returns an array the same size as A, containing 1 (true) % where the elements of A are found in B, and 0 (false) elsewhere. test_data_idx_tmp = ismember(data_idx,train_dataRand_idx) test_dataRand_idx = data_idx(~test_data_idx_tmp)' % Check to see if training and test data index are exclusive. check_train_test_idx = ismember(train_dataRand_idx,test_dataRand_idx) %-------------------------------------------------------------------------- % Testing stage. test_vector = test_dataRand_idx; %Select randomly obtained testing data. % Training stage. train_vector = train_dataRand_idx; %Select randomly obtained training x_val = [1:15]; y_val = 2*[1:15]; plot(x_val,y_val,'or','MarkerFaceColor','r') grid on %Put specific data point labels on plots. test_vector_label = test_vector'; labels = num2str(test_vector_label,'F%d'); labels_cell = cellstr(labels); text(x_val,y_val,labels_cell,'horizontal','left', 'vertical','bottom')