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How can I display a PNG file?? [message #23145]

Wed, 10 January 2001 03:10

Miguel Ángel Córd is currently offline

Miguel Ángel Córd
Messages: 11
Registered: March 2000

Junior Member

Hi,
i am using the query_png and the read_png functions to read a png file.
The read_png returns a 4 channel image and i don't know how to display
it.
I execute this commands:

IDL> ok=query_png('intro.png',s)
% Loaded DLM: PNG.
IDL> help,s,/structure
** Structure <780f0>, 7 tags, length=36, refs=1:
CHANNELS LONG 4
DIMENSIONS LONG Array[2]
HAS_PALETTE INT 0
IMAGE_INDEX LONG 0
NUM_IMAGES LONG 1
PIXEL_TYPE INT 1
TYPE STRING 'PNG'
IDL> window,0
IDL> wset,0
IDL> image1=read_png('intro.png')
IDL> tv,image1
IDL> help,image1
IMAGE1 BYTE = Array[4, 629, 288]

Thanks!!

--
------------------------------------------------------------ -----------
Miguel Angel Cordoba cordoba@ehma.upc.es T.934017371
http://campus.uab.es/~2034008

Grup de Modelitzacio Hidrologica (UPC) (http://www.upc.es/ehma/gmh)
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How can I display a PNG file??

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