小编are*_*ete的帖子

我正在d3.js中构建一个带有序数x轴的条形图,其刻度应该用文本标记图表.任何人都可以解释序数尺度如何"映射"x刻度到相应的柱位置？具体来说,如果我想指定带有文本值数组的x刻度标签到条形图中的相应条形图.

目前我正在设置域名如下:

    var labels = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t"];
    var xScale = d3.scale.ordinal()
                .domain(labels)

但是,在文本标签之后显示1-19的值.

正如这个小提琴所见:

http://jsfiddle.net/chartguy/FbqjD/

Associated Fiddle源代码:

//Width and height
            var margin = {top: 20, right: 20, bottom: 30, left: 40};           
            var width = 600 - margin.left - margin.right;
            var height= 500-margin.top -margin.bottom;
            var w = width;
            var h = height;


            var dataset = [ 5, 10, 13, 19, 21, 25, 22, 18, 15, 13,
                            11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];

            var labels = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t"];
            var …

假设我有数据库A和表b.给定多个.sql文件b1,b2,...,bn,每个文件对应一个b的互斥表转储,我将如何将所有文件b1,b2,...,bn组合成一个.sql表文件？或者我如何将单个文件的导入合并到一个表中？

Linux风味:Debian(Crunch Bang)

发生问题:尝试使用以下命令构建cvblobs时

cd ~/cvblob
cmake .

错误:

CMake Error at cvBlob/CMakeLists.txt:20 (find_package):
 Found package configuration file:

/usr/local/share/OpenCV/OpenCVConfig.cmake

but it set OpenCV_FOUND to FALSE so package "OpenCV" is considered to be
NOT FOUND.


-- Configuring incomplete, errors occurred!

我正在尝试将xml文件的目录作为blob加载到数据库表中.每行都包含一个相应的blob文件.通过python脚本将文件加载到表中时,值将作为null插入.在mysql命令行中运行等效命令时也是如此.

有一次我能够在将一些文件夹权限更改为mysql之后插入值,但由于需要脚本权限,我不得不修改目录/ var/lib/mysql/foo的所有权,因此值被重新插入为null有效地打破了我写的脚本.我不记得必要的目录权限更改这样做.

以下是对该主题的讨论:

http://bugs.mysql.com/bug.php?id=38403

随着

MySQL LOAD_FILE返回NULL