Large Heatmaps default to filling with white (later found this was text) with no documented way to turn off

[markgloverswaybtinternetcom]

1. PLEASE CAREFULLY READ: FAQ

2. PLEASE CAREFULLY READ: Documentation

3. FOR FIRST-TIME USERS ISSUES, please use the Discord server.

4. REMOVE ALL 3RD PARTY LIBRARIES.

5. PLEASE MAKE SURE that you have: read the FAQ; explored the examples; searched among Issues; and read the link provided in (1) (2).

6. Be mindful that messages are being sent to the e-mail box of "Watching" users. Try to proof-read your messages before sending them. Edits are not seen by those users.

7. Delete points 1-7 and PLEASE FILL THE TEMPLATE BELOW before submitting your issue or we will immediately close it.

Thank you!

---

Version of Dear PyGui

Version: XXX Operating System: XXX (Windows 10, macOs xx, Ubuntu 20.04, etc.)

My Issue/Question

A clear and concise description of what the issue/question is. Please provide as much context as possible.

To Reproduce

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

A clear and concise description of what you expected to happen.

Screenshots/Video

XXX (you can drag files here)

Standalone, minimal, complete and verifiable example

# Here's some code anyone can copy and paste to reproduce your issue
import dearpygui.dearpygui as dpg

dpg.create_context()
dpg.create_viewport()
dpg.setup_dearpygui()

with dpg.window(label="tutorial"):
    dpg.add_button(label="Press me")

more_code_to_explain_my_issue()

dpg.show_viewport()
dpg.start_dearpygui()
dpg.destroy_context()

[v-ein]

Please fill in the description as described in the template (see items 1-7 at the top).

[markgloverswaybtinternetcom]

Documentation does not indicate that an empty value for 'fmt' stops it filling hi resolution heat maps with text. I found 'format' null in C++ code, stopped it and tried some guesses in Python. I was using the heatmap for spectrograms, so the text was a bit unexpected.