[Gambas-user] fastest way to "zero-out" a huge binary file

[Simonart Dominique]

Hi,

May be I've to elaborate a little bit?

I see the process like this:
1) you transpose each cell of your initial array to a pixel 
of a picture where the coordinates of the pixel is equal to 
the coordinate of the cell and the grey color of the pixel 
is equal to the elevation in the cell
2) you zoom the picture (200%):
basically, each initial pixel become a square of 4 pixels 
all the same color, but I'm sure there are functions to 
evaluate three of them in intermediate color according the 
color of the neighbour pixels (Hope you understand what I 
mean!) so the final picture is as precise and smooth as the 
initial picture was, but four times bigger.
3) you repeat 2) a number of times
4) you transpose each pixels from the final picture to the 
cells of an array where each cells contains the elevation 
equal to the grey value of the corresponding pixel.

My english skill can not permit me to say more. Please, if 
someone could correct me, thanks in advance to do it!

regards,
Dominique Simonart

Le 25/01/2010 00:17, Simonart Dominique a écrit :
>
> Hi,
> I've just a crude idea and know nothing more on this subject!
> If you assume that each value in your big array is a color
> value instead of an integer, may be you can find some
> graphic effect wich simulate your algorithm.
> It seems to me that it's like to find an intermediate color
> between 2 others.
> Think each cell of your final array as a colored pixel with
> color equal to the elevation
>
> The graphical chips are so sophisticated and powerfull that
> they could accelerate your process by a one million factor
>
> HTH
> Dominique Simonart