images(z1,z2)Select image planes z1 to z2 inclusive. z2 defaults to z1.
quarter(z1,z2)Select the inner quarter of the image planes z1 to z2 inclusive. If both z1 and z2 are missing, then all planes are selected. If only z2 is omitted, z2 defaults to z1.
boxes(xmin,ymin,xmax,ymax)(z1,z2)Select the pixels within a box with corners xmin,ymin,xmax,ymax. z1 and z2 are the same as in the "image" subcommand. If z1 and z2 are omitted, all planes are selected.
polygon(x0,y0,x1,y1,x2,y2,...)(z1,z2)Select the pixels within the polygon defined by the list of vertices. z1 and z2 are the same as in the "image" subcommand. If z1 and z2 are missing, all planes are selected. If only z2 is omitted, it defaults to z1.
mask(file)Select pixels according to the mask given in the file.
The units of the numbers given in the above commands are, in general, absolute pixels. But this can be changed (and rechanged) by using one of the following subcommands.
abspixelCoordinates are interpreted as absolute pixel values, the default.
relpixelCoordinates are relative to the reference pixel of the map.
relcenterCoordinates are relative to the central pixel of the map, (defined as (naxis1/2+1,naxis2/2+1)).
arcsecCoordinates are in arcseconds, relative to the reference pixel.
kmsCoordinates in the third dimension are in km/s. NOTE: This region only permits simple bounding boxes. The default is to display the entire image.
The first form causes a connection to be made with a network display server, whereas the second form uses local hardware directly. For the network servers, the server process may have to be started before invoking the Miriad task -- see below.
Currently supported types are:
xmtv Miriad X server. `server' is the servers hostname. (use "localhost" if you are not networked) Normally the xmtv server will be the same host as the X server. The user will normally invoke the xmtv server before running any Miriad TV tasks, with
If the X server and xmtv server are on different hosts, you may need to set the DISPLAY environment variable on the xmtv server, and use xhost on the X server.
ivas IVAS (VMS only). `device' is the VMS device name. You will require an IIS IVAS for this.
ivserver IVAS server. `server' is the servers hostname. Servers are currently installed on castor.astro.uiuc.edu and bkyast.berkeley.edu.
msss Miriad Sun Screen server. `server' is the serving Sun, which can be any Sun with a console. The user will normally invoke the server before running any Miriad TV tasks, with
mxas Miriad X server. `server' is the servers hostname. This is an inferior server to xmtv.There is no default for the server.
fiddle Allow interactive modification of colour tables, zoom, etc. NOTE: The Fiddle option currently only works with the IVAS servers! zoom Zoom in on the displayed images. NOTE: Zoom attempts to display the bounding box of all of the displayed images. If more than one channel was loaded, then the zoomed display will be of the first channel. movie Display the sequence of images as a movie. NOTE: Movie will attempt to zoom onto one image and then center the display step by step through each following image (and then return back to the first image to begin again). The rate at which the images will change is a function of the cursor's X position. The further to the left of the display that the cursor is located, the faster the rate of change; the further right, the slower. NOTE: some displays require a mouse button press to identify the cursor position. Functions to control the direction and style of motion are available if the panel is present. If not, a subset of functions will be available to the four functions A - D (may also be keys F3 - F6).