SumNeuron commented on issue #1281: how to prepare data for mxnet.io.NDArrayIter
URL: 
https://github.com/apache/incubator-mxnet/issues/1281#issuecomment-330478164
 
 
   I also am confused about prepping data for MXNet.... (although this is more 
general)
   
   Even the method you 
[recommend](https://mxnet.incubator.apache.org/architecture/note_data_loading.html)
  is only talked about in theory and has no practical demonstration as to how 
one might convert say a CSV file to your format.
   
   Also while you do have CSVIter it seems way to complex. Here are two lines 
from the 
[parameters](https://mxnet.incubator.apache.org/api/python/io.html#mxnet.io.CSVIter
 ):
   
   ```
   - data_csv (string, required) ? The input CSV file or a directory path.
   - label_csv (string, optional, default='NULL') ? The input CSV file or a 
directory path. If NULL, all labels will be returned as 0.
   ```
   
   What is the difference between `data_csv` and `label_csv` besides one being 
optional? If I define both does the latter override the former? Why doesn't 
this have a `delim` parameter so you could just as easily handle TSV files? 
What if the file has a header? 
   
   =
 
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