getting blank cells in html.table

kcrisman
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I would like the following to give me a blank spot in a table in the notebook.

html.table([[1,None],[3,4]])

Unfortunately, it instead LaTeXs it to \mathrm{None}, which jsmath can't handle in any case. But I don't really want that behavior of latex() to change, but rather to figure out how to get the blank spot in the table without actually hacking the code of html.table (this is supposed to work on a server which is only updated once a semester).

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I built an EmptyCell class which changed _latex_ before realizing that even '' gives an empty cell.. is it too awkward to preprocess the table contents?

DSM ( 14 years ago )

That's no problem at all. Are you saying that I could replace with an empty string? I didn't think about that.

kcrisman ( 14 years ago )

Yes, this works. Can you make that an ANSWER so I can ACCEPT it? :-) Preferably with a nice example.

kcrisman ( 14 years ago )

PS - I ran into trouble because I had tuples. So I had to do lists. But that was no problem either.

kcrisman ( 14 years ago )

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I had to process my table ahead of time to do this, replacing None with the empty string, but that worked. Next up - figuring out how to process a list of lists more easily than with a double loop and then finding the right sublist index to replace...

kcrisman ( 14 years ago )

b = [[i if i != None else '' for i in l] for l in a] does it without indices, although it does have a double loop.

DSM ( 14 years ago )

Yeah, I'm always hesitant to do double list comprehensions, but this would work great. I don't count a list comprehension as anywhere nearly as inelegant as a for loop with colon and indentation.

kcrisman ( 14 years ago )

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getting blank cells in html.table

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