NOTE: The cf-satellite mailing list is no longer active. The list archives are made available for historical reasons.
Hi Jim... > I used "the_image" because I was too lazy to hunt up a proper name. I think > the standard name for the image data will vary widely depending on the > contents. It could be brightness temperature, radiance, or something else > altogether. I don't think there will be a single standard name. As long as an application can uniquely identify such a variable as "an image" (where appropriate), I don't think a standard_name would even been needed. That, to me, is the central issue: an application gets the attributes for a variable and needs to figure out what it is. If there were a generic standard_name, that would help; however, in the absence of that, then the app would have to look at the shape and/or coordinates and explore those variables to see if any of them stands out as meaning "this is an image". > In this example, there is no problem with sequential-valued coordinate > variables. The only true coordinate variable is the one named bandit. The > others are data variables that are identified as auxiliary coordinates in > the coordinates attribute of the image variable. These variables can have > values that repeat, alternate, etc. Everything is driven by the parametric > coordinate variable bandit. (Which, as I suggested previously, could be an > array of strings that uniquely named the different bands instead of an array > of integers. It functions as a key.) My head is thick, obviously. But I've got it now: we have a "dimension" which is also a "coordinate variable" with a unique "_CoordinateAxisType". The contents (values) of the variable, however, could be most anything -- the key is that it is easily recognized as such and is used to dimension other variables with metadata (like central wavelengths or something). Thanks... tom -- Tom Whittaker University of Wisconsin-Madison Space Science & Engineering Center (SSEC) Cooperative Institute for Meteorological Satellite Studies (CIMSS) 1225 W. Dayton Street Madison, WI 53706 USA ph: +1 608 262 2759
cf-satellite archives: