Programs of the Month

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Randomly-selected Madagascar programs get featured every month on the Madagascar blog. This page provides a summary list with links.

2017

April sfseislet Seislet transform.


2016

March sflinear 1-D linear interpolation.
February sfmig2 2-D prestack Kirchhoff time migration with antialiasing.
January sfsort Sort a float/complex vector by absolute values.

2015

December sfdivn Smooth division.
November sfpldb and sfplas Convert Vplot to ASCII; convert ASCII to Vplot
October sfisolr2 Lowrank decomposition for 2-D isotropic wave propagation.
September sfsimilarity Local similarity measure between two datasets.
July sfmutter Muting.
June sfintbin Data binning by trace sorting.
May sfbox Draw a balloon-style label.
April sfslant Time-space-domain Radon transform (slant stack).
March sfgrey Generate raster plot.
February sfhistogram Compute a histogram of integer- or float-valued input data.
January sfmf 1D median filtering.

2014

December sfbin Data binning in 2-D slices.
November sfthreshold Soft thresholding.
October sfsigmoid 2-D synthetic model from J.F.Claerbout.
September sfmax1 Picking local maxima on the first axis.
August sfstolt Post-stack Stolt modeling/migration.
July sfltft Local time-frequency transform (LTFT).
June sfeikonal Fast marching eikonal solver (3-D).
May sfhelicon Multidimensional convolution and deconvolution by helix transform.
April sfcostaper Cosine taper around the borders (N-D).
March sflpad Pad and interleave traces.
February sfdipfilter Filter data based on dip in 2-D or 3-D.
January sfinttest1 Interpolation from a regular grid in 1-D.

2013

December sfcausint Causal integration on the first axis.
November sfremap1 1-D ENO interpolation.
October sfunif2 Generate 2-D layered velocity model from specified interfaces.
September sfpatch Patching (N-dimensional).
August sfai2refl Convert acoustic impedance to reflectivity.
July sftime2depth Time-to-depth conversion in V(z).
June sfwiggle Plot data with wiggly traces.
May sfvscan Velocity analysis.
April sfnmo Normal moveout.
March sfpow Apply power gain.
February sfpwd 3-D plane wave destruction.
January sfricker1 Convolution with a Ricker wavelet.

2012

December sfhalfint Half-order integration or differentiation.
November sfbandpass Bandpass filtering.
October sfkirmod Kirchhoff 2-D/2.5-D modeling with analytical Green's functions.
September sfiwarp Inverse 1-D warping.
August sfpick Automatic picking from semblance-like panels.
July sffft3 FFT transform on extra axis.
June sfdip 3-D dip estimation by plane wave destruction.
May sfderiv First derivative with a maximally linear FIR differentiator.
April sfgrey3 Generate 3-D cube plot.
March sfspectra Frequency spectra.
January sfsmooth Multi-dimensional triangle smoothing.

2011

December sfcontour Contour plot.
November sfenvelope Compute data envelope or phase rotation.
October sfagc Automatic gain control.
September sfclip Clip the data.
August sfgraph Graph plot.
July sfnoise Add random noise to the data.