balarsen's articles:

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Save a linkedlist? 3 169 (11/13/2009 7:54:20 PM) comp.lang.idl-pvwave Hey all, I have some satellite data that I am mining and a linkedlist seems to be a great way to store this. I would like to store this data to a file, it seems like the easiest way is to just use save, lis... Brian

area inside tracings 3 35 (5/21/2009 9:16:28 PM) comp.lang.idl-pvwave I was recently given a problem that I at first (and second) glance am not sure how to solve. I have scanned images of tracings of rock features. These are closed (or close to the side) shapes that look like n... Brian

Structure of arrays or arrays of structures? 7 35 (1/22/2009 8:52:06 PM) comp.lang.idl-pvwave All, this may be philosophy but I have fought with both today and I am wondering if there are pros and cons to the different implementations. My example is that when I read in text files I build a structure o... Brian

Different sized pixels in pg_plotimage (is this a "feature") 20 31 (1/16/2009 5:01:51 PM) comp.lang.idl-pvwave Paolo (and anyone else who uses pg_plotimage), I am having trouble using/modifying pg_plotimage in a way that produces the output that I want, so I'll try here. using the following idl code: ctload, 39 pg_plo... Brian

Data organization question 1 36 (11/25/2008 2:56:44 PM) comp.lang.idl-pvwave All, I am having a challenge here figuring out how to efficiently store a data set in IDL and am looking for some suggestions on what to do, linkedlist, pointers in some other form, or something else I haven't... Brian

Starting an old IDL version 2 37 (11/3/2008 9:16:52 PM) comp.lang.idl-pvwave All, I finally upgraded to 7.0.4 from 6.4.1 and so far so good. However I am fighting with a dlm and wondering if it is a 32/64 bit issue (the 7.0.4 is 64 and 6.4.1 is 32 at least on my mac). Is there a way ... Brian

Cleaver 2d reverse indicies? 5 21 (11/3/2008 8:54:05 PM) comp.lang.idl-pvwave All, I am using hist_nd.pro from J.D. Smith to find the indices that are in each bin of a 2d mapping of data. I have 3 arrays: THEMIS> help, theta, lshell, pxxm THETA DOUBLE = Array[282576] LSHEL... Brian

Polar TV 3 47 (10/9/2008 6:40:03 PM) comp.lang.idl-pvwave All, I'll do my best to explain what I am trying to do. I have computed occurrence probability at various radius and local time sectors around the earth and am displaying them using tv on axes of X:Radius, Y:... Brian

binary_template() errors and do I have to use this? 1 29 (9/2/2008 7:52:25 PM) comp.lang.idl-pvwave All, I just got a bunch of satellite data that I would like to read in, unfortunately instead of being cdf or something kind it is some random format described as: The .FPM files contain the CRRES magnetometer... Brian

Are people using IMSL? 1 33 (7/8/2008 4:10:57 PM) comp.lang.idl-pvwave All, I am looking through the IDL documentation and seeing more and more of the routines that I want to use as part of IMSL, in this instance it is random numbers from "weird" distributions. This makes we want... Brian

balarsen's replies:

Items(154) /16 Next >> Last >|

correlation between images 17 34 (4/2/2009 12:33:24 PM) comp.lang.idl-pvwave Hi all, I have two images and I want to check (statistically) whether they are "the same" and show it to others so they will believe me :-). The first thing I thought of was using the Pearson correlation coef... spam4434 (134)

image correlation 4 102 (4/20/2009 12:21:53 PM) comp.lang.idl-pvwave Hi everyone! I have a problem about using PV-Wave and I think someone might be able to help me. I need to compare two images. I would like to use a photo as a reference, in this photo i will define a point tha... fabiovianna05

Question on high performance platform for IDL 1 35 (4/24/2009 9:48:38 PM) comp.lang.idl-pvwave We are going to acquire a compute server for our lab which will support IDL. We have some fairly large, but parallizable problems so we are looking at 64-bit systems. Currently, we are considering a system u... null6898 (16)

linear regression between two array with different number of emelemts 1 35 (4/27/2009 8:58:54 PM) comp.lang.idl-pvwave Hi, folks. Is there any function in IDL that can calculated linear regression between two arrays with different length (number of elements)? I mean, I do not want to interpolate the array with less elements t... jhaohu (36)

area inside tracings 3 35 (5/21/2009 9:16:28 PM) comp.lang.idl-pvwave I was recently given a problem that I at first (and second) glance am not sure how to solve. I have scanned images of tracings of rock features. These are closed (or close to the side) shapes that look like n... balarsen (265)

Am I having a blackout? 5 34 (5/28/2009 9:27:48 PM) comp.lang.idl-pvwave Hi all, I'm trying to read a very simple file with very basic commands, but it reads the wrong values for the last variable (d2): readf does not see it are negative values and reads only the last five digits. ... Mark.Savenije (4)

plot same y axis different columns parameter 1 42 (8/6/2009 10:15:04 AM) comp.lang.idl-pvwave Hello, I am trying to plot on the same y axis 6 columns with practically the same numbers, a oplot with me a superposition of the values, so what I want is to plot those 6 columns in different positions of the... guerra009 (1)

Sorting (big) int array: Eliminate for loop 3 33 (9/21/2009 2:46:47 PM) comp.lang.idl-pvwave Hi, I'm trying to eliminate a for loop form one of my codes, but can't seem to get around it (though I must be able to, with the histogram function, or something of the sort)... I was hoping to get some advice ... ludlow (7)

histogram, how to trasfer from linear bins to logarithmic bin? 11 33 (9/27/2009 7:30:14 PM) comp.lang.idl-pvwave HI, I have a question that now I get a set of datas, which are linearly binned into the histogram, but how to transfer it into a logarithmic bins? Thanks. ... jianchaoge (1)

Invalid indices? 6 29 (10/27/2009 5:19:40 PM) comp.lang.idl-pvwave So I'm kinda living under a rock: IDL Version 6.3, Microsoft Windows (Win32 x86 m32) so I'm curious whether this is intended/expected behaviour or a bug or what (and whether it has change in recent years... Y