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? ...
Red is in hsv, 0: 10 and 150: 180. How to extract it? novice, this is what I wrote, but I don t know how to write it later. I roughly want to combine their results. or is there a more elegant way to write it? ask for divine guidance. hue_image = c...
as shown in the above figure, when the width of input (Class Selector) is given, you can see that two input, appear when the arrow is selected, one is tag and the other is named by class, and the arrow mark appears when the mouse moves into the area,...
problem description using exif.js to get the direction information of a picture has been reported incorrectly. Some pictures have the following errors, and some pictures can get the direction information of a picture more than enough related codes ...
topic description android shuts off a permission manually while the program is running and collapses when the permission is turned on sources of topics and their own ideas when I was doing app, I suddenly found that the system would collapse and n...
problem description I read the difference data from two different excel, and then put them into a new excel. It is normal to display a column of ID number under IDE, but it becomes a scientific counting method in excel. Is there a way to make a column...