map-projections

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matplotlib.mlab.griddata very slow and returns array of nan when valid data is input

I am trying to map an irregularly gridded dataset (raw satellite data) with associated latitudes and longitudes to a regularly gridded set of latitudes and longitudes given by basemap.makegrid().I am[详细]

2023-04-04 18:56 分类：问答
Mapping of 2D Points to a new Perspective

This is my first post! I\'m trying to make an application that can determine whether certain points in a grid (image) are light or dark.The original grid is well defined (I know where all the points[详细]

2023-03-06 23:18 分类：问答
Simple map projection

I\'ve a map of 400x400 that approximatively represents an area of 250x250km in that I want to project a GPS coordinate in form of Lat/Lon.[详细]

2023-01-30 18:41 分类：问答
How to transform a distance from degrees to metres?

I\'m using OpenLayers with an ordinary mercator map and I\'m trying to sample a bounding box by finding a grid of points in latlong.[详细]

2023-01-23 20:09 分类：问答
Proj4 reprojection using R

I am t开发者_如何学JAVArying to reproject coordinates from WGS84 to MGA Zone 53, a UTM projection based on the GDA94 datum.I get infinity as my result, which is definitely incorrect.I am using R\'s pr[详细]

2023-01-21 05:37 分类：问答
Orthographic projections in Google Earth (/Sky) possible? Alternatives?

I need to create whole-sky maps, but Google Earth in Sky mode has limited \"zoom out.\" Is it possible to create an orthographic map projection with Google Earth (or, for that matter, MS Virtual Earth[详细]

2023-01-16 21:58 分类：问答
Google Maps Custom Projection

I have created a custom Google Maps projection using the Google Maps Javascript API V2.It looks like this, as per the API specification:[详细]

2023-01-16 15:07 分类：问答
How can I get Proj4 details from the shapefile's .prj file?

I am using mapdotnet services for our gis application to load the shapefiles, and this mapdotnet service wants the proj4 details.I\'m getting them from spatialreference.org, but for this projection th[详细]

2023-01-05 18:15 分类：问答
Using LINQ to map dynamically (or construct projections)

I know I can map two object types with LINQ using a projection as so: var destModel = from m in sourceModel[详细]

2023-01-01 23:30 分类：问答
How can I convert UTM coordinates from Meters to Feet?

Does anyone have a formula or conversion that will switch my UTM coordinates from Meters to Feet?I found Javascript code that will convert UTM coords in meters to Lat/Long but I will need my U开发者_运[详细]

2022-12-27 12:10 分类：问答