cell

1、读取文件（按行读取） fid = open('file_name');while(~feof(fid)) line = fgetl(fid); % 读取一行数据 endfid.close(); 2、正则表达式split字符串 1 while(~feof(fid)) 2 line = fgetl(fid); 3 % 第一个参数为要处理字符串；第二个参数为正则表达式；第三个参数为如何处理正则表达式；可以是match、split 4 data = regexp(line, '\s+', 'split'); % 返回值为split后是cell数组 5 end 3、cell数据拼接 cell_a = {'ss'}; cell_b = {'cc'}; cell_c = [cell_a,cell_b]; % 这里使用的是方括号，而不是花括号 4、cell数据选取 cell = {'1','2','3'}; cell_3 = cell{3}; % cell第3个元素 5、cell元素个数 cell = {'1','2','3'}; numel(cell); % 输出3 6、字符串拼接 str1 = 'abc'; str2 = 'efg'; str3 = [str1,str2,'xyz']; % str3为'abcefgxyz' 7、 执行文本命令（可以用字符串来当做命令来执行） str =

I need to get the cell numbers within a distance (e.g., 10 km) of one point using R, but I didn't figure out how to handle it for the raster data. library(raster) r <- raster(ncols=10, nrows=10) cellFromXY(r, c(2,2)) # get the cell number of one point How to get the cell numbers within a distance of one point? Use extract with the buffer option and cellnumbers=TRUE r <- raster(ncols=100, nrows=100) r[]<-runif(ncell(r)) xy <- cbind(-50, seq(-80, 80, by=20)) extract(r, xy[1:3,], buffer=1000000,cellnumbers=TRUE) 来源： https://stackoverflow.com/questions/13996256/get-cell-number-within-a-distance-of

Looked around on Google and Stack Overflow, maybe I'm just blind though. Is there a way to UPDATE a table cell with an " " (empty) value. Let's say like: mysql_query("UPDATE table SET cellname = ' ' WHERE id = '$idneeded'"); Any help much appreciated. you should know that empty string '' is not same as space string ' ' and not same as NULL value. to update the cell value to empty string : mysql_query("UPDATE table SET cellname = '' WHERE id = '$idneeded'"); UPDATE table SET cellname = ' ' WHERE id = '$idneeded' ^^^---not empty. spaces are not "empty". Try cellname='' or cellname=NULL instead.

Can someone help me, I'm not sure what formula to use. I have highlighted the cell in the picture to show an example of what I mean. What I want to do is highlight the cell in column A where the value matches a value in column D, it does not have to be in the same row. If there is a duplicate value in column D then highlight the cell in column A green. Thanks for any help given. Try this as the conditional format formula =MATCH(A1,$D:$D,0) 来源： https://stackoverflow.com/questions/16559207/excel-if-duplicate-cell-value-found-in-another-column-then-highlight-green

I have a grid panel where some cells are editable, and others aren't. I'd like to make it so that when you tab through the grid with your keyboard, the non-editable cells are skipped over i.e. never get selected. Here's my simple grid so far: var store = Ext.create('Ext.data.Store', { fields:['name', 'age', 'country'], data:[ {name:'Lisa', age:13, country: 'USA'}, {name:'Bart', age:75, country: 'France'}, {name:'Homer', age:32, country: 'Germany'}, {name:'Marge', age:56, country: 'Australia'} ] }); var grid = Ext.create('Ext.grid.Panel', { title: 'People', store: store, columns: [ {header:

Let me show you a demo: here it is working for only rows. its not working for cells. i want to change cells' (tds') background colors with mouse clicks. For example: a have a table, and it has 4 tds. table's background color is white. if i click to a td, a td should be red, than if i click to b, b td should be red and a td should be white again. if i click to c than, c should be red and b should be white right now. A - B C - D Try updating the JavaScript to: $( function() { $('td').click( function() { $(this).parents('table').find('td').each( function( index, element ) { $(element).removeClass

对之前的项目总结一下： 事情是这样的，我需要在定制Cell完成新闻类app的展示 虽然说SDWebImage提供了一个方法，异步加载图片到UIImageView上 但是，有些时候。需要的图片并不是需要铺满UIImageView 于是就抛弃了，后来想想还是挺二逼的。我可以在下面在铺一层边框 UIImageView也能达到这个效果 于是乎，故作高大上，非要自己写。 后来看别人的方法，找到点感觉，还是写出来了，不过还是建立在网络良好的情况下 解决办法 主要要做到一下几个方面： 1.除了UI部分，所有的加载操作都在后台完成。这一点可以通过dispatch或者performSelectorInBackground或者NSOperationQueue来实现。见：在iOS开发中利用GCD进行多线程编程iOS开发中使用NSOperationQueue进行多线程操作 2.避免后台加载完成多个资源之后集中到达占用UI线程的处理时间太长。这一点可以通过NSOperationQueue来实现，将资源到UI的展现过程放在队列中逐个执行，且在每个操作完成之后进行强制等待，可以用usleep(int microSeconds)来解决。 3.重用cell。创建cell一般是很慢的，一定要重用，甚至为了performance，可以在view创建之初就创建足够多的cell在重用队列中。 来源： oschina 链接：

昨天在折腾UITableView,最终想实现的效果是在UITableViewCell里添加UIScrollView， 效果图如下： 初步设计是用代码生成UITableView，所以没有用到IB来创建 View等控件。 几经波折，在自定义TableViewCell里成功添加了UIScrollView,而scrollview里面动态添加了Ｎ张远程图片。 但是Cell的高度始终都是原始的44像素，由于Cell里面的图片都是有固定大小，所以在 -( CGFloat )tableView:( UITableView *)tableView heightForRowAtIndexPath:( NSIndexPath *)indexPath { return 128.0 ; } 但Cell死活都是不变。经过一翻搜索，几乎无答案。最后自己再翻查ViewDidLoad，发现在初始化UITableView的时候只设置了dataSource,却没有设置delegate self . PhotoDetailTable = [[ UITableView alloc ] initWithFrame : CGRectMake ( 0 , 0 , screenFrame. size . width , screenFrame. size . height - 93 ) style :

IOS TableView Cell重用机制及TableView常用Code2013-03-28 10:36:47 我来说两句 作者：lianbaixue 收藏 我要投稿 创建UITableViewController子类的实例后，IDE生成的代码中有如下段落： [cpp] view plaincopy - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = [NSString stringWithFormat:@"Cell"]; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } //config the cell return cell; }