我有以下代码：
random.seed(1234) # Specify a random seed
n = 500
for i in range(n):
x = random.uniform(-4 4)
y = random.uniform(-4,4)
z = random.uniform(-4,4)
pos = vector(x,y,z)
# Make sure pos is not too close to both positive and negative charge
if abs(pos - charge1.pos) > 1 and abs(pos - charge2.pos) > 1:
# Create an arrow if it's far enough from both charges
a = arrow(pos=pos, axis= Efield(pos, charge1) + Efield(pos,charge1))
我的图片上传成功。即使if($this->upload->do_upload())
{
$data = array('upload_data' => $this->upload->data());
$configer = array(
'image_library' => 'gd2',
'source_image' => $data['upload_data']['full_path'],
'maintain_ratio' => TRUE,
'width' => 1024,
'height' => 350,
);
$this->image_lib->clear();
$this->image_lib->initialize($configer);
$this->image_lib->resize();
$upl_filename = $data['upload_data']['file_name'];
$imageUpdateData = array($entity.'_image' => $upl_filename);
$this->db->where($entity.'_id',$id);
$queryImage = $this->db->update($entity,$imageUpdateData);
$image1_success = 1;
$image1_msg = "$entity updated successfully";
}
工作正常（因为我试图在函数工作时打印一条消息）。
但是，图像没有调整大小。我做错了什么？