Can I insert matplotlib graphs into Excel programmatically?

Question

I am saving matplotlib files as .tiff images. I\'d like to be able to then open an excel file and paste the image there.

openpyxl doesnot seem to support image embed

Answer 1

Here is what I found from two different links on the web, that worked perfectly for me. Matplotlib allows saving png files which is what I make use of here:

from PIL import Image

file_in = "image.png"
img = Image.open(file_in)
file_out = 'test1.bmp'
print len(img.split()) # test
if len(img.split()) == 4:
    # prevent IOError: cannot write mode RGBA as BMP
    r, g, b, a = img.split()
    img = Image.merge("RGB", (r, g, b))
    img.save(file_out)
else:
    img.save(file_out)

from xlwt import Workbook
w = Workbook()
ws = w.add_sheet('Image')
ws.insert_bitmap(file_out, 0, 0)
w.save('images.xls')

The image part of the code is from Ene Urans response here http://www.daniweb.com/software-development/python/threads/253957/converting-an-image-file-png-to-a-bitmap-file.

The xlwt is simply form the documentation of xlwt I found at http://www.simplistix.co.uk/presentations/python-excel.pdf.