风倒钩旗的角度和长度
我正在开发一个显示表面风的应用程序。风速和风向将使用“风倒钩”符号显示，如下所述：绘制风
我的问题：“旗帜”相对于风刺“杆”的角度和长度有什么标准吗？
目视我见过的图表，我认为 60 度的角度和旗子长度约为杆长的三分之一看起来不错，但如果这些符号有任何官方定义的标准，我想跟随他们。
注意：此应用程序不会用于导航，因此它看起来是否与官方图表完全相同并不重要。我只是不想让它变得丑陋，或者对于知识渊博的用户来说看起来明显错误。
I am working on an application that displays surface winds. Wind speed and direction will be displayed using "wind barb" symbols, as described here: Plotted Winds
My question: Are there any standards for the angles and lengths of the "flags" in relation to the wind-barb "pole"?
Eyeballing the diagrams I've seen, I think that an angle of 60 degrees and a flag length about a third as long as the pole length would look fine, but if there are any officially defined standards for these symbols, I'd like to follow them.
Note: This app will not be used for navigation, so it is not very important that it look exactly like an official chart. I just don't want it to be ugly, or to look obviously wrong to a knowledgeable user.
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我发现这个程序可以绘制天气图。我想你可以获得源代码。
http://www.ncarg.ucar.edu//补充/wmap/index.html#HEADING1-139
I found this program that draws weather maps. I think you can get the source code.
http://www.ncarg.ucar.edu//supplements/wmap/index.html#HEADING1-139