python has matplotlib,. I don t know whether CPP has the same level of drawing library. If you want to achieve the drawing effect of matlab in the MFC framework, you can achieve some simple operations like matlab, such as zooming in and out, coordinate ...
topic description A rookie of matlab programming asks all the great gods to give you an idea to create an entry in the Filter data filter with matlab programming sources of topics and their own ideas there is a raw data on hand, no tags, only numb...
import sympy x em sympy.sin (f) z=r*sympy.sin (l) how to find the Jacobian matrix? xpenr sympy.cos (l) sympy.cos (f) ypenr sympy.cos (l) sympy.sin (f) z=r*sympy.sin (l) ? J = [cos (l) cos (f),-r sin (l) cos (f),-r cos (l) * sin (f)] [c...
Why can t symbolic variables be logarithmic? an is a symbolic variable, and I want to generate another symbolic variable, ln (a), to display an error. But pow (a pencils 4) is OK. Why? ...
how does matlab use one time column matrix [time] to find another 4-column matrix [time, XMagi X] corresponding to row data-the two matrices are not the same length? ...
listen for a field in the form form in watch and pop up a warning. Did not report wrong before, I do not know what reason suddenly there is such a warning, write a vue project, do not understand the reason, have encountered or know the god to help guide...
how to get the current value when Mini Program s checkbox is deselected. api only gives the value array of all selected checkbox ...
I created vue.config.js, according to the latest configuration of vue-loader, but ran the error plus.js, in my console.log vue-loader found that test: .vue$ was url-loader. Why? how to modify it? in addition, why does the first rule loader of rule...
1. Follow the article http: www.williamlong.info a., and the result shows an error: replacement of a new ssl certificate still shows an error. the following is the httpd-ssl.conf code, file path opt lampp etc extra httpd-ssl.conf This is the...
recently, a multi-page application packaging vue is being built with webpack. Some statistical codes (mainly the introduction of js) choose whether to add to the page according to the difference between the test environment and the production environmen...