I have only 'data' and want to use that 'data' file again for interpolating and replacing the NaN value. Thanks Jeremy, but the problem I am having is that I don't have any sample data 'x'. interpolate at the locations of the bad data using the good dataĭata = interpol(data, x, x) Gooddata = where(data eq data, ngooddata, $ IDL> interpol(tg1t,0,z1t,0/1e5, 900.) 13) Has the photospheric temperature changed 14) What is the maximum ionization fraction of He II at z1225 km at t6. figure out where there are NaNs and where the useful data are I would do something like this, if I had an array of locations x and a MATLAB - working with function handles rather than slow symbolic expressions. How to plot Root Locus without using special Matlab functions. I want to replace those "NaN" values by the nearby values either using interpolation. &0183 &32 IDL interpol equivalent for python. Result = DIALOG_MESSAGE("END!!",/INFORMATION)Ģ: header = header+'.Dear all, I have an data array. lsquadratic or quadratic can be used to tell interpol what sort of interpolation to use), /rest returns the spectrum shifted to rest frequencies, by default this is calculated using the reqvel. First, start IDL and make the analysis routines. Printf,unit,'bands = '+ strcompress(365,/remove) IDL commands to reduce Mock pseudo-DPS observations Setting up IDL for the reduction. on my machine, imhsibproj() takes 0.2 s when procedures are already compiled. Printf,unit,'lines = '+ strcompress(nl,/remove) &0183 &32 needs however to compile IDLs interpol.pro as GDLs do not support the QUADRATIC option.
Idl interpol code#
Licensing: The computer code and data files described and made available on this web page are distributed under the GNU LGPL license. Printf,unit,'samples = '+ strcompress(ns,/remove) &0183 &32 interp, a FORTRAN90 code which takes a set of data associated with successive values of a parameter, and produces an interpolating function which can be evaluated over a continuous range of the parameter. IDL> interpol(tg1t,0,z1t,0/1e5, 900.) 13) Has the photospheric temperature changed 14) What is the maximum ionization fraction of He II at z1225 km at t6.5s. Idlitwdprogressbar_setvalue, process,1+aa*i Tmpdata = interpol(imgdata,365,/LSQUADRATIC) set your interpolation strategy See the documentation for INTERPOL for details about the various interpolation methods. &0183 &32 In numerical analysis, Lagrange polynomials are used for polynomial interpolation. Imgdata = convol(imgdata,New_savgolfilter,/EDGE_TRUNCATE) Interpolation is accomplished by using the IDL INTERPOL procedure except when nearest is set, in which case it is done by this procedure. Process = Idlitwdprogressbar(GROUP_LEADER=wTlb,TIME=0,TITLE='') Savgolfilter=savgol(16,16,0,4) set your smoothing parameters for S-G filter
Idl interpol pro#
To execute this IDL program, these 4 subroutines are put in the same document folder call the Main procedure PRO TEST_POINT to run the program.įile = 'E:\test.img' set your time-series remote sensing data to be processed. Users are expected to have sufficient knowledge in remote sensing image processing, and basic of IDL programing. The Savitzky-Golay filter and linear-interpolation functions were embed in IDL function library. This program includes 4 subroutines, which were list in this document. Note: the program was developed in IDL 8.0, it should be executed in 8.0 or upper version of IDL programing platform.