MNIST数据集中的图像如何转换？(How are images in MNIST dataset transformed?)

 1）转到https://github.com/almasaeed2010/AdminLTE/releases并下载最新版本。 
 
 2）在vendor路径中创建文件夹bower 。 在bower再次创建新的文件夹admin-lte 。 
 
 3）从第一步解压缩到/vendor/bower/admin-lte 。 
 
 4）更改您的AppAsset （它位于backend/assets文件夹中）并添加以下代码： 
 
class AppAsset extends AssetBundle
{
    public $sourcePath = '@bower/';
    public $css = ['admin-lte/dist/css/AdminLTE.css'];
    public $js = ['admin-lte/dist/js/AdminLTE/app.js'];
    public $depends = [
        'yii\web\YiiAsset',
        'yii\bootstrap\BootstrapAsset',
        'yii\bootstrap\BootstrapPluginAsset',
    ];
}

1) Go to https://github.com/almasaeed2010/AdminLTE/releases and download last version.
 
2) Create folder bower in vendor path. And in bower create new folder admin-lte again.
 
3) Extract archive from first step to /vendor/bower/admin-lte.
 
4) Change your AppAsset (it is location in backend/assets folder) and add this code:
 
class AppAsset extends AssetBundle
{
    public $sourcePath = '@bower/';
    public $css = ['admin-lte/dist/css/AdminLTE.css'];
    public $js = ['admin-lte/dist/js/AdminLTE/app.js'];
    public $depends = [
        'yii\web\YiiAsset',
        'yii\bootstrap\BootstrapAsset',
        'yii\bootstrap\BootstrapPluginAsset',
    ];
}