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Discussions
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 Description: IDL and PV-Wave language discussions.

 SPAWN command Hi, I am a novel user of IDL and I am developing a program in IDL with a problem and I am contacting you to find a solution. I am using the SPAWN command to execute a fortran program (Modos.exe) in IDL. My IDL program modifies the input of the fortran program and execute Modos.exe within a looping.... more » By Chicho  - 1:28pm - 1 new of 1 message

 Youtube Jazz show on Youtube search paperthaga By Brian Thaga  - 3:46am - 1 new of 1 message

 calling ANSYS Fluent from IDL I need to run ANSYS Fluent by calling it from IDL and I am finding no information on how to do this. The objective is to run a monte carlo routine in IDL with inline code that runs several Fluent simulations in a loop. If anybody in the group has any experience with this I would appreciate the help.... more » By justinclouds  - May 18 - 2 new of 2 messages

 Speeding up xy distance calculations using complex numbers This may be well known to many people, but I just discovered that in IDL, you can greatly speed up x,y distance calculations using complex numbers to represent positions in the xy plane, in some cases. The example below takes you through four nominally identical calculations in which we define a square array of x and y values (or complex z=x+iy values), and for each point, compute the square of the (dx^2 + dy^2) distance form a given point, p=(x,y) or zp=x+iy. For the complex calculations I use d * conj(d). I think that's the fastest available way of doing this.... more » By kagoldb...@lbl.gov  - May 18 - 3 new of 3 messages

 overlap of two polygons Hello What i have is set of rois defined over 1024x 1024 image. So for finding whether two different rois (ROI1 & ROI2) from two different image cover same region of CCD image plane I can use : ROI1 -> GetProperty, data=a result(k)=ROI2 -> ContainsPoints(a[0,k],a[1,k]) This way i can figure out whether two rois have overlapping region or not.... more » By suruchi  - May 18 - 1 new of 1 message

 strictarrsubs in IDL 8.1 Hi, I have the following in my .idlstartup: compile_opt strictarrsubs However, I can subscript arrays in 8.1 with [-1], for instance. If I remember correctly, the compile_opt statement in earlier versions of IDL meant I would get an error for a [-1] subscript. Am I misremembering, or has something changed?... more » By kdpen...@gmail.com  - May 17 - 2 new of 2 messages

 A function to locate values... without using histogram I am writing this just to share on the solution I wrote to a problem I encounter frequently: Locating all occurrences of each different value contained in an array. Often this happens when I am working with database-like operations, when I have tables (arrays of structures) and need to do what would be the equivalent of several call to... more » By Paulo Penteado  - May 16 - 1 new of 1 message

 graphical issue after removing all tabs from a widget_tab I've created a tab bar using widget_tab and added several tabs to it. If I remove a tab, all the others shift over as expected. However, if I remove all the tabs and then add some new ones, the new tabs overlap unnaturally. Here's a picture of what I'm talking about: Before: [link]... more » By Morgan Rehnberg  - May 15 - 4 new of 4 messages

 Data points off plot when limit xrange Hello, I am plotting a 2D dataset using cgplot and cgplots. When I limit the xrange to [-150,150] I end up with data points plotted outside the axis bounds of my plot. I realize that I'm cutting off some of the data but my interest is in the data surrounding 0, not the outliers. How do I limit the xrange so that those outlier datapoint outside of the range not to plot outside of my axis? Thank you.... more » By Morgan Silverman  - May 15 - 3 new of 3 messages

 how to use mpfit fitting routine Dear All, I have an observed spectrum in which I have wavelength (Wo) and flux (Fo). I want to compare that with the 200 different synthetic spectrum in order to obtain the best free parameter. I want to use MPFIT routine for that. I have gone through their webpage but It seems very complicated to me to use. Does anyone know how to use to fit the spectrum.... more » By idlhelp  - May 15 - 4 new of 4 messages

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