Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
Hello! Another plea for help here. I have some oceangraphic data that I would like to display using Pvwave but I'm not having much success. The data basically consists of a series of almost parallel, vertical slices through the ocean :- ____ ____ ___ y (long) /| /| /| /| /| | / / | / | / | / | / | | / / |/ |/ |/ |/ | | / / /___/ /___/ | | --------------> x(lat) | | | | | | | | | | | | | | | | | | | | | |__| | | | | | | / | | /| | /| | / | | / | | / | | / z(depth) |/ |___|/ |___|/ Data is in the form of x, y, z, temperature. I want to be able to display the 3D data and roatate it around the z axis to look from different angles and to contour or shade the surface with the temperature values. Later on I want to interpolate the data to give a full 3D volume but thats a different problem! SHADE_SURF doesnt seem to be able to cope with this kind of 'vertical' surface. I can cheat and map longditude to z and depth to y but this means I can't rotate the data around the depth axis. Any suggestions as to alternative ways of displaying it? Can I convert it to a volume and make most of the volume transparent except where I have data points? And if I do that can I still display axis etc? Also is there a 'null' value for data points (e.g. -9999.000) ? Help! All advice very welcome. thanks Tricia Matthews University of Reading England sgsmatpa@uk.ac.reading