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? ...
php uses tcpdf, and the pdf file generated by html is misplaced in the contract seal. What do you need to do? 1. Typesetting under html is correct, as shown in figure 2html 3pdf I don t know what the problem is and how to solve it? ...
after deploying the project to github page with the gh-pages tool run deploy, the access to "username.github.io project-name " has always been 404, but it is possible to use the domain name of username.github.io to access the files of the master branch,...
1. The official website begins with an example of listening for a native event on the root element of a component using the .native modifier of v-on, for example, < base-input Vmuri onconcentration focus.native = "onFocus " > < base-input > 2. But ...
problem description when uploading multiple files using formidable, there is always one more empty file, as shown in the following figure so the traversal file stream is printed out, and sure enough, it is looped three times, and the code is as f...
problem description while learning the c-sharp project, I encountered such a statement FieldInfo field = base.GetType () .GetField (base2.Tag.ToString (), BindingFlags.NonPublic | BindingFlags.Instance); the environmental background of the problems ...