error to train VOC2007

[jwnsu]

Pulled latest codes, saw following error during training (ubuntu 16.04/keras2.0.8/tensorflow 1.2):
"File "/home/ai/krn/keras_retinanet/preprocessing/pascal_voc.py", line 149, in load_image
regression_targets = np.append(regression_targets, np.expand_dims(labels, axis=1), axis=1)
File "/home/dsu/tf/local/lib/python2.7/site-packages/numpy/lib/function_base.py", line 5152, in append
return concatenate((arr, values), axis=axis)
ValueError: all the input arrays must have same number of dimensions".

Earlier, saw error: "
File "/home/ai/krn/keras_retinanet/preprocessing/pascal_voc.py", line 148, in load_image
labels, regression_targets = anchor_targets(image, boxes_batch[0])
TypeError: anchor_targets() takes at least 3 arguments (2 given)", which was resolved by adding 3rd-parameter len(self.classes).

[hgaiser]

Thanks for reporting this issue! Seems Pascal training wasn't kept up to date. Should be fixed by commit d52ee11 .

[jwnsu]

need to fix next 2 lines as well (simply copy from coco.py, the issues will go away.)

[hgaiser]

Thanks, I'll make those changes.