CSV

L7 supports CSV comma delimited CSV data loading.

CSV is a text data structure and it is difficult to express complex geographic data structures, so CSV only supports two data structures.

• Point data: longitude and latitude coordinates need to be specified
• Line segment and arc data: need to be specifiedStarting and ending pointslongitude and latitude coordinates

parser

• type string required json
• x string point data represents longitude
• y string point data represents latitude
• x1 string longitude
• x2 string latitude

Point data loaded via CSV

layer.source(data, {
  parser: {
    type: 'csv',
    x: 'lng',
    y: 'lat',
  },
});

CSV data demo example

Segment arc data is loaded via CSV

layer.source(data, {
  parser: {
    type: 'csv',
    x: 'lng1',
    y: 'lat1',
    x1: 'lng1',
    y1: 'lat2',
  },
});

CSV line segment data demo example