I ran out of google searches and reaching out for help here. We are right now processing KML file using geoXml3 at client side. But Ideally I would want to pre-process it in server side and send the ploygons on the client side. Because KML file is 18MB file and it takes forever to download on client side and then client parses it and draws the polygon on google map.
We changed KML files to GeoJSON and reduced the size , compressed it - after all the circus the response time is still not good. I just want to know if there is a way / library in node that can do this.
2 Answers
Answers 1
here are some that might help? https://github.com/jlord/gs2geojson https://www.npmjs.com/package/geojson
also if you can please specify what are you using it for? and why do you need it? maybe I can try to suggest, some better way to optimize your app. if you give me a scenario, it will be great..
Answers 2
When you say that you are compressing the file, what do you mean? If you mean an algorithm such as zip or lha, that won't necessarily reduce the size of the file that much. What you want to do is to remove line segments from the KML file. In reducing some geographic information, I found that there were lengths of many miles that varied less than a foot from a straight line. Since the data points were spaced every few feet, that meant that the vast majority of the points in the KML file could be removed without making an appreciable change in the appearance of the geometry. Looking for straight line segments is relatively simple.
You should also keep in mind the scale of the map you are viewing and the spacing of the data points in the KML file. Even if the lines are complex curves, it may be possible to remove large numbers of points by trying to curve fit segments of the features and reduce the size of the data in this way.
You seem to be implying that downloading the data from the server to the client takes far more time than processing the data on the server. If this is correct, reducing the number of points is the most efficient method.
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