Venus_15x

thingiverse

A globe file for the planet Venus. A 15 times exaggeration of elevations is used. This was requested by a planetarium in Argentina. It is donated for free. It is for an 18 inch diameter globe. The outer file is Venus. The second file, inner, is to make a 3D printer produce a thin shell. The material of the globe will be 1/8 inch thick by using the outer and inner files. There may be some errors in the file which you can fix. Data sets were in a sinusoidal projection. Get the data for Venus here: https://pds-geosciences.wustl.edu/mgn/mgn-v-gxdr-v1/mg_3002/gtdr/sinus/ The Perl software is shown here that takes the sinusoidal data and re-allocates it to a rectangular array of elevations: for ($row=1; $row<$row_max; $row++ ) { for ($column=0; $column<$col_max; $column++ ) { $lat = -1 * ( $row - 1 - $SPECLINE + 0.5 ) / $d; $lon = ($column + 0.5 - $PROJSAMP)/(cos($lat)*$d) + $PROJ_LON_RADIAN; $lat_deg = $lat*180/$pi; $lon_deg = $lon*180/$pi; $lat_integer = int((90-$lat_deg)*$resolution); $lon_integer = int(($lon_deg + 180)*$resolution); if(($lat_integer<=$vrow_max)&&( $lon_integer <=$vcol_max)&& ($lat_integer>=0)&&( $lon_integer>=0)) { # repair pixels that have no data ( 0 == no data) by using adjacent value