cartography
Data model for meridians and parallels
I\'m thinking about some suitable model for storing meridians and parallles. Meridians and parallels should be kept as lines.开发者_JAVA技巧[详细]
2023-02-10 14:35 分类:问答Quickly find and render terrain above a given elevation
Given an elevation map consisting of lat/lon/elevation pairs, what is the fastest way to find all points above a given elevation level (or better yet, just the the 2D concave hull)?[详细]
2023-01-28 02:43 分类:问答How do I plot latitude/longitude coordinates on the screen?
I am trying to figure out how to plot WGS84 latitude/longitude points on a bitmap but cannot figure out the math required to turn lat/lon points into coordinates that would be plottable. Could anyone[详细]
2023-01-16 11:15 分类:问答Suggestions on manipulating an SVG map
I\'m working on a map of the native languages of California for Wikipedia. The map contains areas that each correspond to a language. The original looks like this (click it to see the SVG):[详细]
2022-12-16 09:34 分类:问答