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function [ ] = createJSON( pre )
% This function will create a JSON file for network visualization.
%
% Input:
% 1) prestructure_input.txt
% Structure file.
% 2) prestructure_input_temp.txt
% Structure file with model averaging scores.
%
% Output:
% prenetwork.json-- json file.
%
% open file for input, include error handling
dfile=strcat(pre,'structure_input.txt');
fin = fopen(dfile,'r');
if fin < 0
error(['Could not open ',dfile,' for input']);
end
% Read in first line to get the number of nodes and the node labels.
buffer = strtrim(fgetl(fin)); %get header line as a string
nnodes = numel(strfind(buffer,"\t"))+1;
labels = cell(1,nnodes);
for j=1:nnodes
[next,buffer] = strtok(buffer);
labels{j} = next;
end
% Read in the edges
edges = cell(nnodes,nnodes);
for i = 1:nnodes
buffer = fgetl(fin);
for j = 1:nnodes
[next,buffer] = strtok(buffer);
edges{i,j} = next;
end
end
%Check to see if a file with model averaging scores exists
dfile2=strcat(pre,'structure_input_temp.txt');
%if it does not exist, then just open the other structure file again
if exist(dfile2, 'file') != 2
dfile2 = dfile;
frewind(dfile2);
end
fin2 = fopen(dfile2,'r');
if fin2 < 0
error(['Could not open ',dfile2,' for input']);
end
buffer = fgetl(fin2); %get header line as a string
% Read in the scores
scores = cell(nnodes,nnodes);
for i = 1:nnodes
buffer = fgetl(fin2);
for j = 1:nnodes
[next,buffer] = strtok(buffer);
scores{i,j} = next;
end
end
nedges = 0;
sources = [];
targets = [];
scores1 = [];
for i = 1:nnodes
for j = 1:nnodes
if edges{i,j} == "1"
nedges = nedges + 1;
sources = [sources; i];
targets = [targets; j];
scores1 = [scores1; str2num(scores{i,j})];
end
end
end
outfile = strcat(pre,'network.json');
fout = fopen(outfile,'w');
fprintf(fout,"{\n");
fprintf(fout," \"nodes\": [\n");
for i = 1:(nnodes-1)
fprintf(fout," {\n");
fprintf(fout," \"data\": {\n");
fprintf(fout," \"id\": \"%i\",\n",i);
fprintf(fout," \"label\": \"%s\"\n",labels{i});
fprintf(fout," }\n");
fprintf(fout," },\n");
end
fprintf(fout," {\n");
fprintf(fout," \"data\": {\n");
fprintf(fout," \"id\": \"%i\",\n",nnodes);
fprintf(fout," \"label\": \"%s\"\n",labels{nnodes});
fprintf(fout," }\n");
fprintf(fout," }\n");
fprintf(fout," ],\n");
fprintf(fout," \"edges\": [\n");
for i = 1:(nedges-1)
fprintf(fout," {\n");
fprintf(fout," \"data\": {\n");
fprintf(fout," \"id\": \"%i%i\",\n",sources(i),targets(i));
fprintf(fout," \"source\": \"%i\",\n",sources(i));
fprintf(fout," \"target\": \"%i\",\n",targets(i));
fprintf(fout," \"weight\": %3.2f\n",scores1(i));
fprintf(fout," }\n");
fprintf(fout," },\n");
end
fprintf(fout," {\n");
fprintf(fout," \"data\": {\n");
fprintf(fout," \"id\": \"%i%i\",\n",sources(nedges),targets(nedges));
fprintf(fout," \"source\": \"%i\",\n",sources(nedges));
fprintf(fout," \"target\": \"%i\",\n",targets(nedges));
fprintf(fout," \"weight\": %3.2f\n",scores1(nedges));
fprintf(fout," }\n");
fprintf(fout," }\n");
fprintf(fout," ]\n");
fprintf(fout,"}");
%fprintf(fout,'%s\t',labels{1:end-1});
%fprintf(fout,'%s\n',labels{end});
%for i = 1:nnodes
% fprintf(fout,'%s\t',edges{i,1:end-1});
% fprintf(fout,'%s\n',edges{i,end});
%end
fclose(fout);
end
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