我想知道如何在给定的代码中处理瓶颈.
%% Points is an Nx3 matrix having the coordinates of N points where N ~ 10^6
Z = points(:,3)
listZ = (Z >= a & Z < b); % Bottleneck
np = sum(listZ); % For later usage
slice = points(listZ,:);
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目前for N ~ 10^6,np ~ 1000和number of calls to this part of code = 1000瓶颈声明总共花费大约10秒,与我的其余代码相比,这是一大块时间.

针对@EitanT请求的索引语句的示例代码的更多屏幕截图

考虑以下情况
file:./ include/functions/table-config.php包含: .
.
$tablePages = 'orweb_pages';
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class URIResolve {
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$category = null ;
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function process_uri() {
...
$this->category = $tablePages;
...
}
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}
file:./ settings.php包含:
. . require_once(ABSPATH.INC.FUNC.'/table-config.php'); require_once(ABSPATH.INC.CLASS.'/uri-resolve.php'); . .这会有用吗 我的意思是从process_uri()访问$ tablePages是可以接受的,还是会给出错误的结果.
如果可能发生错误,请建议更正或解决方法.
如何使用Javascript/CSS在透视图中实现3D文本转换.
使用Javascript/CSS外部库的解决方案也是可能的
我想在安装Kohana/SilverStripe的同时收到以下错误/警告.
它是什么意思,我该怎么做?
Warning:
date_default_timezone_get():
It is not safe to rely on the system's timezone settings.
You are *required* to use the date.timezone setting or the date_default_timezone_set() function.
In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier.
We selected 'Asia/Calcutta' for '5.5/no DST' instead in C:\Server\apache\htdocs\kohana\system\core\Kohana.php on line 136
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提前致谢!
我有一个字符串,如何将其转换为数组?
操作该数组后,如何再次将其变为字符串?
PHP中的字符串是否与Java中的字符串相同?
这有什么骗局?
基本上是问题的两个部分.
上述任何程序都涉及到javascript吗?如果是,请说明