|CSV files||Map Kitchen [Part 1]||GPolygon data from a text file|
File formats like XML/KML and JSON are great but a comma separated text file CSV is the simpliest format to create and maintain. You can do that by any text editor or spreadsheet. Databases export CSV too.
You can 'draw' a CSV file by this polyline editor.
Markers and their infowindow have been done by csv-formatted text files before. Why not polylines too.
Functions and methods:
Application in mind?
- The text file is downloaded by GDownloadUrl()
- parseCsv() splits the text file into data cells and returns an array of GLatLng() objects.
- Corrupted lines are skipped.
- makeDrawing() draws the polyline/polygon.
- Copy/paste the code from this page as a template.
- Make a CSV text file with lines:
- Yes. Longitude first. That is a GPS 'standard' but there is an option for inversing them.
- Read the source. It is commented with some instructions.
- .txt extension or 'real' .csv, no matter.