Tips for parsing a tsp library file with JavaScript

Looking for assistance with a tsp library file in JavaScript. The specific file, named file1.tsp, contains the following data:

NAME: a280
COMMENT: drilling problem (Ludwig)
TYPE: TSP
DIMENSION: 280
EDGE_WEIGHT_TYPE: EUC_2D
NODE_COORD_SECTION
  1 288 149
  2 288 129
  3 270 133
  4 256 141
  5 256 157
  6 246 157
  7 236 169
  8 228 169
  9 228 161
 10 220 169
 11 212 169
 12 204 169
 13 196 169
 14 188 169
 15 196 161
 16 188 145
 17 172 145
 18 164 145
 EOF

The goal is to extract the numbers and organize them into arrays as follows:

node =[1,2,3,4,...]
x=[288,288,...]
y=[149,129,...]

If anyone is able to provide guidance on how to achieve this, your help would be greatly appreciated. Thanks in advance!

javascriptarraysfile-io

Answer №1

Perhaps you could try something along these lines:

const fileData = `
NAME: a280
COMMENT: drilling problem (Ludwig)
TYPE: TSP
DIMENSION: 280
EDGE_WEIGHT_TYPE: EUC_2D
NODE_COORD_SECTION
  1 288 149
  2 288 129
  3 270 133
  4 256 141
  5 256 157
  6 246 157
  7 236 169
  8 228 169
  9 228 161
 10 220 169
 11 212 169
 12 204 169
 13 196 169
 14 188 169
 15 196 161
 16 188 145
 17 172 145
 18 164 145
 EOF
`;

const linesWithDigits = fileData.match(/^ *\d+ +\d+ +\d+$/gm);

const nodeArr = [];
const xArr = [];
const yArr = [];

for (const line of linesWithDigits) {
  const digits = line.trim().split(/ +/);
  nodeArr.push(Number(digits[0]));
  xArr.push(Number(digits[1]));
  yArr.push(Number(digits[2]));
}

console.log(nodeArr);
console.log(xArr);
console.log(yArr);

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