PA Explorer now has a rich set of gridding options that include minimum curvature, Kriging, inverse distance weighting with elliptical weighting, triangulation, nearest neighbor and bidirectional splines. Gridding of cross-section data is also supported with the same suite of methods.

PA Professional provides 3D voxel gridding options that include layered, inverse distance weighting, discretized (lithology) and 3D Kriging with full 3D variogram support.

Advanced 2D and 3D toolkits are provided for manipulation, merging and calculation, and scripting of 3D voxel models.

PA Explorer includes a complete range of FFT, convolution and non-linear filters for grids and line data.

The line filters include convolution, FFT and some non-linear methods. The convolution filters include median, average and user-defined filter kernels puls 14 standard and non-linear methods. The non-linear filters include AGC, Median and noise methods. The FFT filters include bandpass, continuation, derivative, highpass, lowpass, pseudo-gravity, pseudo-mag, reduction to equator and reduction to pole.

The grid filtering tools provide a powerful and easy-to-use suite of filters and transformations that are focused on interpretation. The convolution filter suite supports all conventional ER Mapper filters, user-defined filters and some non-linear filters. As well as the normal range of filters, the FFT suite includes the ZS Geofilter suite, analytic signal, component, integral, pseudo-gravity, pseudo-magnetic and general phase transformations.

You can select either maximum entropy or minimum curvature padding with the latter offering high quality preservation of long wavelengths to improve RTP and pseudo-gravity transformations. A minimum curvature hole filling tool is especially useful for filling gaps in SRTM grids.