Matlab提取特征值是经常要读取多个图片文件,把文件名保存在数组中后再读取会出错.从stackoverflow中找到如下解决方法: I've a M by N matrix, each cell contains a character array, that is an image path. How can I use it to read image? It should be string. It's what I try to do: imread(fl(1,1)); ??? Err…

Matlab总遇到一些神奇的问题,让人摸不着头脑.昨天编写程序的时候遇到一个让我十分火大的问题,也是自己的matlab基础不好吧. 先描述一下问题,再GUI界面有个listbox,Tag属性是’listbox1’,里面是这样的数据,我的目的是要把这些数据转换成数值类型的矩阵: list_string = get(handles.listbox1,'string') data=str2num((list_string)); 使用上面两行代码进行转换却异常出错了!看后台的错误描述如下: ??? Er…

how to convert a number to a number array in javascript without convert number to a string 如何在不将数字转换为一个字符串的情况下将一数字转换为javascript中的一个数字数组 Number To Array Math.round 四舍五入 bug "use strict"; /** * * @author xgqfrms * @license MIT * @copyright xgqfrms…

Convert CString to ANSI string in UNICODE projects Quick Answer: use an intermediate CStringA. Normally, this is not something that should be done. *It is technically unreliable, unless you can guarantee that the source CString to be converted does n…

PHP传给JS字符串用ecsape转换加到url里,又用PHP接收,再用网上找的unscape函数转换一下,这样得到的字符串是UTF-8的,但我需要的是GB2312,于是用iconv转换 开始是这样用的 $str = iconv('UTF-8', 'GB2312', unescape(isset($_GET['str'])? $_GET['str']:")); 上线后报一堆这样的错:iconv() : Detected an illegal character in input string 考…

本来想写一篇关于golang io的笔记,但是在学习io之前必须了解array, slice, string概念,因此将在下篇写golang io.   array: 数组的长度是该数组类型的一部分,例如var buffer [256]byte 的类型是[256]byte, len(buffer)总是返回256.   slice: 一个slice描述一个数组中连续的一部分,例如var slice = buffer[100:250].slice也可以从slice产生,如var slice2 = s…

iconv(): Detected an illegal character in input string 错误解决方法 //转码 function iconv_gbk_to_uft8($string){ if (!$string){ return ''; } $encode = mb_detect_encoding($string,array("ASCII","GB2312","GBK",'BIG5','UTF-8')); return ic…

Convert Sorted Array to Binary Search Tree Given an array where elements are sorted in ascending order, convert it to a height balanced BST. 很简单的二分法,只要给出Array的开始和结束下标作为参数传入即可. public TreeNode sortedArrayToBST(int[] num) { return constructBST(num,0,nu…

DateTimeFormatInfo pattern = new DateTimeFormatInfo() { ShortDatePattern = "your date pattern" };DateTime date = Convert.ToDateTime("your date string",pattern);…

Convert Sorted Array to Binary Search Tree Given an array where elements are sorted in ascending order, convert it to a height balanced BST.   每次把中间元素当成根节点,递归即可   /** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * Tre…