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? ...
problem description after the new page of mpvue is re-npm run dev, the pages array of app.json files in the dist directory does not increase correspondingly, resulting in a page path error always reported when redirecting. What should I do to solve th...
errors in query operations using annotations and SQLProvider it is OK to use annotations directly, but not with SQLProvider. @Select({ "<script>" + "SELECT avator FROM t_user " + "WHERE id IN &quo...
The requirement of the product is to force the text of the table to be displayed on one line. I set white-space:nowrap; to .cell and there is a problem as shown in the figure. table component will forcibly generate two table tags and set table-layou...
app.globalData.Authorization is the global variable that saves token http({ url, data, method }) { return new Promise((resolve, reject) => { const app = getApp(); wx.request({ url: url, data: data, method, ...
the size parameter of the UIGraphicsBeginImageContextWithOptions function is too large, resulting in a memory explosion I use size data, which is about 3 times the height and width of the screen size, that is (3 UIScreen.main.bounds.height,3 UIScree...