Matplotlib change font size within table (just header) - python

Question

I'd like for the headers of the columns to have a smaller font than the values in the cells so that they're readable (I'll show what I mean in an attached jpeg). Right now everything has the same font size.

Example of the table code:

fig = plt.figure(figsize=(11, 8.27))
ax = fig.add_subplot(111)
ax.axis('off')

index_length = len(well_data_table.index)

table_1 = well_data_table.iloc[0:30]
table_2= well_data_table.iloc[30:60]
table_3 = well_data_table.iloc[60:-1]

q='lightsalmon'
colors3 = [q,q,q,q,q,q,q,q,q,q,q]
the_table1 = ax.table(cellText=table_1.values, colWidths = 
[.1]*len(table_1.columns),
  rowLabels=table_1.index,
  colColours = colors3,
  colLabels=table_1.columns,
  cellLoc = 'center', rowLoc = 'center',
  loc='bottom',
  bbox=[.1, 0, 1, 1]) 

the_table1.auto_set_font_size(False)
the_table1.set_fontsize(8)
the_table1.scale(1, 1)


ax.title.set_text("""TEST""")


pdf.savefig(facecolor='w')

JPEG Example of the issue

ImportanceOfBeingErnest · Accepted Answer · 2018-07-12 23:16:05Z

1

You could loop over the cells of the table that should get a different font size and set the fontsize in that loop.

cells = the_table1._cells
for cell in the_table1._cells:
    if cell[0] == 0:
        the_table1._cells[cell].set_fontsize(8)

answered Jul 12, 2018 at 23:16

ImportanceOfBeingErnest

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DMTishler · Accepted Answer · 2019-06-09 15:31:50Z

0

Here is an example that helped me iterate through the cells with an index tuple("key" in example) to do things like remove borders or set header(row and col headers in this example):

for key, cell in table.get_celld().items():
    # scrub borders for clean look(see source below)
    cell.set_linewidth(0)

    # adjust format for only header col and row to help with space issues
    # col header on 0, row header on -1.
    if key[0] == 0 or key[1] == -1:
        cell.set_fontsize(6)

I appreciate this post by Bart which helped me remove borders in my specific case.

edited Jun 9, 2019 at 15:31

answered Jun 9, 2019 at 15:13

DMTishler

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1 Comment

MD004 Over a year ago

Scrubbing borders is not needed if you set edges='open' in the call to table

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