how to show a bitmap?

**Diez B. Roggisch** · Jul 18 '05, 06:14 AM

Re: how to show a bitmap?

> I have a two dimentional array (by Numeric Python) available, and it[color=blue]
> represent a grayscaled bitmap picture. How to display it? Thank you![/color]

You can use pygame.

Diez

**Yun Mao** · Jul 18 '05, 06:14 AM

Re: how to show a bitmap?

Could you please be a little more specific? ;)

Yun

On Mon, 1 Dec 2003, Diez B. Roggisch wrote:
[color=blue][color=green]
> > I have a two dimentional array (by Numeric Python) available, and it
> > represent a grayscaled bitmap picture. How to display it? Thank you![/color]
>
> You can use pygame.
>
> Diez
>[/color]

**Diez B. Roggisch** · Jul 18 '05, 06:14 AM

Re: how to show a bitmap?

Yun Mao wrote:
[color=blue]
> Could you please be a little more specific? ;)[/color]

Its well documented on www.pygame.org. You have to look into the module
surfarray, which makes it possible to access and manipulate pixel data
using - guess what - Numeric arrays.

Look in the code examples for some effects that utilize this - AFAIK there
is something like a fire or motion blurring. These access pixel data. Just
plug in your array, and you should be done.

Regards, Diez

**Diez B. Roggisch** · Jul 18 '05, 06:14 AM

Re: how to show a bitmap?

> Look in the code examples for some effects that utilize this - AFAIK there[color=blue]
> is something like a fire or motion blurring. These access pixel data. Just
> plug in your array, and you should be done.[/color]

pygame Code Repository

http://www.pygame.org/pcr/numpy_flames/index.php

This is the flames example. The function in question is blit_array - look it
up in the docs. This example even deals with indexed_bitmap_ data, which is
what you want, as you have a only one value per pixel.

Regards,

Diez