So you might try something like (1-~>:FINAL_IMAGE) write_image 'imagefilename.jpg'
On 5/4/08, Cliff Reiter <[EMAIL PROTECTED]> wrote: > > You can check the type of the array with 3!:1 > (see the 3!: foreign conjunctions) > and > > 3!:0 ID600x600x1 > 1 > > means that ID600x600x1 is Boolean (not integer, not an allowed image3 > type. In fact be careful about using image3 in general with 2 color images > (there is a bug with png's with 2 element palette's too). > > I don't have access to FINAL data type, so not sure if that is what is > going on. (your attachments were not passed along). > > By the way, have you considered using *.png (no loss of info but be sure > to use at least three palette elements and not a Boolean index array). > Grayscale jpegs are not universally supported and there may be future > bumps even if you get image3 working with your data. > > [EMAIL PROTECTED] wrote: > > > Cliff and others, > > It makes sense when I look at what you are doing and when I make random > > 4 x6 x1 matrices I am able to deal with them as images without a problem. I > > tried adding a trailing axis of length 1 and I called it FINAL_IMAGE. see > > the code below: > > > > ID600x600x1=: 600 600 1 $ 1 , zeros6 NB. 600 zeros appended > > $ID600x600x1 > > 600 600 1 > > view_image ID600x600x1 > > 600 600 1 > > FINAL_IMAGE=:FINAL dot ID600x600x1 > > $FINAL_IMAGE > > 400 600 1 > > BW256 view_data FINAL_IMAGE NB. This is exactly what I want as a > > JPEG > > 600 400 > > view_image FINAL_IMAGE NB. Not working properly > > 400 600 1 > > NB. and these are the following errors I received: > > > > (,:"1 FINAL_IMAGE) write_image 'imagefilename.jpg' > > |domain error: memw > > | (,m) memw addr,0,sz > > 85 0 1 (,:"0 FINAL_IMAGE) write_jpeg 'test_image.jpg' > > |domain error: memw > > | (,m) memw addr,0,sz > > > > Do the errors I recieved help? If not, I just attached my code. > > > > Sorry if it is against forum rules to attach my code or files. It > > should operate on any 400x600 image, the one I used was just named lion.jpg > > > > Brandon > > > > > > ******************************************************************************************* > > image3 has 4 allowed image data types, but matrices are not on the list > > for images; view_image adds one more type (filenames) > > > > http://ww2.lafayette.edu/~reiterc/j/image3help/image3.html > > > > view_data is more ad hoc, better to work with view_image and write_image > > etc. > > > > Add a trailing axis of length 1 is what you need, I think > > > > (,:"1 FINAL) write_image 'imagefilename.jpg' > > or > > > > 85 0 1 (,:"1 FINAL) write_image 'imagefilename.jpg' > > should work > > . > > . > > . > > . > > > > > > ------------------------------------------------------------------------ > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > -- > Clifford A. Reiter > Mathematics Department, Lafayette College > Easton, PA 18042 USA, 610-330-5277 > http://www.lafayette.edu/~reiterc > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
