astroconst's articles:

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anything new? 4 35 (7/15/2012 3:15:06 PM) comp.lang.idl-pvwave Hey everyone... disappeared for the past ~6 months (got completely swamped with personal and work things)... coming up for air now and wondering if anything's happened in the IDL world lately? -Jeremy. ... Jeremy

IDLDE linux cannot create workspace 7 40 (11/4/2011 6:40:36 PM) comp.lang.idl-pvwave Hi everyone, I never use the DE, so I have never encountered this, but one of my students is trying to run it for IDL 8.0 on a Linux box (I think it's RHEL, not sure what version) and we keep getting the fol... Jeremy

fitting many linear eqs simultaneously with outliers 4 27 (10/13/2011 5:01:04 AM) comp.lang.idl-pvwave So I have a large number of very simple linear equations, which all look like: a_i + b_i x_ij = a_k + b_k x_kj for i,k=1..N (all unique combinations of i and k), j=1..M. The data values x_ij and x_kj are me... Jeremy

cgis routines 0 36 (9/1/2011 2:52:37 AM) comp.lang.idl-pvwave Has anyone in the astronomy community used the CGIS IDL routines for accessing COBE data within the past... uhm... decade? They look like they were last updated in the late 90s, and I'm having some issues ge... Jeremy

JBIU updates 0 38 (8/9/2011 7:49:37 PM) comp.lang.idl-pvwave There have been a bunch of updates to JBIU over the past few months. Most have not been critical, but I just discovered a bug in the flagship MATCHALL_SPH (also used by MATCH_SPH) that occasionally caused som... Jeremy

weird behaviour with cgdemodata 3 32 (6/21/2011 2:26:29 PM) comp.lang.idl-pvwave I'm sure there's a good reason why this happens, but it has me very confused: IDL> i = 5 IDL> print, i, n_elements(cgdemodata(i)) 4 65536 Okay, that looks fine. Now what if I put that in a for lo... Jeremy

cgPlot: /ISOTROPIC clobbers POSITION 2 36 (6/13/2011 7:23:40 PM) comp.lang.idl-pvwave I've noticed that in cgPlot, if I set the /ISOTROPIC keyword (or set ASPECT= to anything, really), the POSITION keyword is ignored. Obviously it can't = use the value verbatim, but I guess I would expect that ... Jeremy

boolean bit array class 0 31 (6/6/2011 7:47:01 PM) comp.lang.idl-pvwave Before I go and implement this myself, does anyone have a class that create= s a bit array class? I essentially want something that I can treat the way = I would a byte array that only contains 0s and 1s, but w... Jeremy

cgplot clobbers user symbols 1 43 (5/18/2011 8:01:32 PM) comp.lang.idl-pvwave I just discovered a behaviour of cgPlot that disturbs me somewhat. If I def= ine a user symbol using USERSYM and then use it in cgPlot using PSYM=3D8, i= t works fine. But I follow it up with PSYM=3Dsomething_e... Jeremy

irregular-to-irregular interpolation 5 271 (5/12/2011 3:01:54 PM) comp.lang.idl-pvwave This is one of those this-must-exist-but-I-can't-find-it cases: I have a quantity which is sampled irregularly over a 2D region. I would li= ke to interpolate its value at a number of irregularly-spaced locati... Jeremy

astroconst's replies:

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faster convol on local subsets? 5 40 (12/5/2011 12:37:01 AM) comp.lang.idl-pvwave Hello experts, Maybe somebody has an easy solution for this? I have a 2D array (img) and want the filter response from kernels that vary= according to the image position. In a second array (loc, same dimensio... note.ice (4)

interpolation #2 #2 13 39 (12/7/2011 1:46:34 PM) comp.lang.idl-pvwave Hi, I have many ascii files which contain a header , 5 columns of data . Number of rows for each data is different. Here is an example of the data: 7.5 14.552 17.698 14.551 12.7623 9.6 14.547... akpinar.anil (27)

Plot #3 15 41 (12/9/2011 3:06:29 PM) comp.lang.idl-pvwave Folks hi, I have a data like this and i want to plot column 1 (x) and column 2 (y) and column 3 as the name of the points on plot (like 12006, 12507 etc.). Could somebody help please? 0 0 12006 35 ... d.poreh (362)

IDl triangulate-reg 1 34 (12/19/2011 9:52:41 AM) comp.lang.idl-pvwave Hi, i am trying to findout nearest point using griddata. tr = GRIDDATA(lon, lat, f, /KRIGING, /DEGREES, START = 0, /SPHERE, $ DELTA = delta, DIMENSION = dims) ;QHULL, lon, m, tr, /DELAUNAY, SPHERE = s z = ... shambhu.mca36 (41)

Plotting Grid data 2 53 (12/26/2011 10:03:41 AM) comp.lang.idl-pvwave ' ' ' nn= GRIDDATA(lonSorted, mlatSorted, newf, /DEGREES, START = 0, DELTA = delta, $ DIMENSION=dims, TRIANGLES=tr, MIN_POINTS=3,/SPHERE, / NEAREST_NEIGHBOR, $ MISSING = !values.f_nan ) MAP_SET, /MO... shambhu.mca36 (41)

confidence level 2 82 (1/19/2012 11:12:28 PM) comp.lang.idl-pvwave Hi, I am searching how to calculate the confidence level for contours. I have the data sets like this amp=(172,51) days=172 ht=51 I am able to draw a contour, but how to estimate the 90% confidence levels for ... kishore1818 (21)

Fastest way to list combinations 4 48 (7/13/2012 8:51:41 PM) comp.lang.idl-pvwave Hi I have to solve a problem which includes listing all possible combinations to form a triplet for a given number of objects. Say you have the objects: a,b,c,d,e, so in total 5 which gives you 5!/(2!*3... antar3s86 (8)

anything new? 4 35 (7/15/2012 3:15:06 PM) comp.lang.idl-pvwave Hey everyone... disappeared for the past ~6 months (got completely swamped with personal and work things)... coming up for air now and wondering if anything's happened in the IDL world lately? -Jeremy. ... astroconst (367)

Efficiently perform histogram reverse indices like procedure on a string array? 5 27 (7/25/2012 11:39:33 PM) comp.lang.idl-pvwave I have an array of a data structure, one tag of which is a string identifie= r indicating which location the data belongs to. There are many thousands o= f data points, but only about a dozen or so unique loc... mattjamesfrancis (44)

Comparing two arrays or different lengths and looking for values within a given range 2 22 (8/6/2012 8:33:01 PM) comp.lang.idl-pvwave Hi all, I'm new to this group, and Coyote suggested that I direct my inquiry here. I have two arrays of different lengths, and I need to look for values withi= n a certain range of each other (in this ca... helen.e.yamamoto (1)