今天分享两个工具，用处见标题。
1. engauge-digitizer
项目地址：https://github.com/markummitchell/engauge-digitizer
优势：图像化界面，manual很清晰（超级简化版Origin?）。
前几天向Thorlabs要了780HP的色散数据，技术人员给了我一张Matlab绘制的图，没给数据，于是我需要自己从图片里提取数据点。
软件里的教程很清楚，也简单易用，这里就不多讲了。
最后提取的数据点可以保存到csv文件。
2. latex2png
优势：简单，会mathtype就行
今天用Illustrator做矢量图，需要在图里加公式字母，我也不想搞一堆代码，编辑ai文件，就StackExchange上找了这个简单好用的工具。具体用法如下：
1) Draw yourgraphs/images in Illustrator.
2) Use http://latex2png.com/. Type your latexequation in there, then preview at 800 dpi.
3) Save theimage, then load into Illustrator.
4) When inIllustrator, select your imported equation image and choose Object –> ImageTrace –> Make and Expand. It is very important to obtain a high dpi imagefor this step to work favorably.
5) Your equation should now be a vector graphic.
6) Selectyour new vector graphic equation and choose Object –> Ungroup. This willseparate the white spaces in your equation from the black content that youneed.
7) Select thewhite spaces and delete them.
8) You now have a fully editable equation looking exactly like it does in Latex. You canscale/adjust and colour to your requirements.
(来自：https://bit.ly/3fcY05K)原谅我太懒，也没时间翻译了，但相信都能懂。
由于是矢量图，再放大，也不会有马赛克的啦。