Magellan GTDR anomalies

# Created by Gerard Gallardo i Peres# ---------------------------------------------------------#### ----------------------------------------------------------# Author: Gerard Gallardo i Peres / Imperial College London, isardSAT## Reviewers: Dr. Philippa J. Mason / Prof. Richard C. Ghail############################################################################# ####### ####### ################################ ########## ############### ################################# ########## ############### ################################# ########## ############### ############################# ####### ####### ############################################################################################ This dataset contains maps of the potential anomalies and low quality pixels of the GTDR volume mg_3002 and the GTDR volume mg_3003. Each of these maps shows the anomalies and associated variables in Mercator and Sinusoidal projection, generated and projected from/as described in: https://pds-geosciences.wustl.edu/mgn/mgn-v-gxdr-v1/mg_3002/document/gxdr.txt The map files are all in TIFF format and are projected using the 1985 COSPAR Venus reference ellipsoid (https://epsg.io/104901). The _anomaly maps show the location of the potential anomalies, with pixel values equal to -99999. The _lq_pixels maps show the location of the potential anomalies and their surrounding 'low quality' neighbours, with pixel values equal to -99999. These are overlain on top of the corresponding GTDR topography above the reference radius value of the product R = 6039999 m. Pixel values equal to 0 correspond to data gaps from the original GTDR products or to pixels outside the projection area.