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? ...
1. You need to use zabbix to monitor jvm, here, but it is found that many of the templates that come with you cannot be used, and many of the key metrics are not well understood, so I came to ask you about the syntax of jmxclient. 2, the following is ...
stuck here all the time. It s no use after reloading. No, no, no. Help? ...
crawler file: import scrapy from xtzx.items import XtzxItem < H1 > from scrapy.http import Request < H1 > class LessonSpider (scrapy.Spider): name = lesson allowed_domains = [ xuetangx.com ] start_urls = [ http: www.xuetangx.com courses?c...
background: 1. I am a java programmer 2. Recently interviewed for a senior development position 3. The previous project mainly used less oracle,mysql, and the companies interviewed basically used mysql s 4. I am weak in the database 5. Recently, I...
after going through the official sdk and testing Qiniuyun, the callback verification always fails, and the true TM is speechless. get token: ** * token * public function fetchUploadToken() { Auth $auth = new Aut...