Hello, Thank you for your replies. I'm still having a little trouble working it out.
Details: What I have are brain images, 30,000 pts on each hemisphere. The points are imported to dx from a file in which the points are rendered in loops from front to back like you were tracing the outline of a brain that was sliced from front to back. Questions: 1) despite reading the manual on pick, I can't seem to figure out how to connect the pick tool. I was able to have the output of image (image renderable) connect to the input of pick, but when I try to output the result of the pick to caption, I get the error "output parameter type and input parameter type do not match". Does anyone know how I can get the output displayed (that is, the 3 coordinates and the 4th data variable), and also how I can save them to a text file? 2) when I look in the locations bar in pick, I see that when I click on a point, it's adds to it 2 numbers. Any idea what these are? The data isn't 2-d, it's 4-d (x,y,z,data). 3) I'm try to select the actual points that make EXACTLY with the input coordinates from the actual data file. I can't seem to figure out which option in pick to make sure I get these values. 4) some one mentioned used map, would this be better? Thank sooo much for your help, Dave p.s. I'm obviously new to data explorer, so please excuse my confusion. Thanks! -----Original Message----- From: Allen H. Nugent [mailto:[EMAIL PROTECTED] Sent: Friday, November 26, 2004 11:41 PM To: opendx2-users@lists.berlios.de Subject: Re: [opendx-users] coordinate selecting protocol In addition to Chris' advice, you can display the coords (as found with {Pick}) using {Caption}. Regards, Allen H. Nugent Graduate School of Biomedical Engineering University of New South Wales Sydney NSW 2052 Australia Tel: +61 2 9385 3916 Fax: +61 2 9663 2108