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This article mainly introduces an example of the extension of profile analysis in the secondary development of te, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article.

In practical application, when doing profile analysis, it is not only necessary to draw a line, but sometimes it is necessary to circle the underground pipeline section, surface buildings or subway and show it on a map as a whole.

In this case, how to develop? here are several development ideas:

1. For arcgis engine development, you can use arcmap to make a mxd in advance. Of course, you need to put all the elements into it, and then use AE's api to sketch on the diagram according to the data. When you do mxd, set the coordinate system to keep consistent with the map.

2. In CS's system, wpf has a control called DynamicDataDisplay, which can do some statistical charts and also support some free plotting lines.

3. On the web side, because the current resource library is more convenient, d3js, echart and so on can be sketched. Of course, if you are familiar with the development of webgl, you can also sketch it on canvas.

4. In the CS system, the GDI+ drawing of C # can also be realized.

In addition to the development of AE has a coordinate system, others need to calculate their own coordinates according to the data. When the coordinates of the map are longitude and latitude, they need to be converted into meters. When it comes to elevation information, the relative elevation is generally adopted.

The proportion of the picture should also be paid attention to, the height and length are not the same proportion, otherwise the picture drawn is deformed.

GDI+ drawing effect

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