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#{ GETIMG -- Call an SIA service URL and return the raw result.
procedure getimg (resource, fields)
string resource { prompt = "Resource name" }
string fields { prompt = "Query images/fields" }
string pos = "" { prompt = "POS string" }
real size = 0.25 { prompt = "SIZE value (degrees)" }
bool samp = no { prompt = "Broadcast result table(s)?" }
bool plot = no { prompt = "Plot result table(s)?" }
bool display = no { prompt = "Display field?" }
bool overplot = no { prompt = "Overplot display?" }
string output = "STDOUT" { prompt = "Output filename" }
string format = "ascii" { prompt = "Output format",
min="ascii|csv|votable|fits|xml|raw"}
int status = 0 { prompt = "Service status code" }
begin
string lname, lres, lpos, url, loname, tname, ltype, args, tcat
bool ldisp, lover, lplot
real ra, dec
int nread, len, nres, nfields, nrows, ncols
# Get params to local variables.
#lres = resource
#lname = fields
lpos = ""
lname = ""
print (resource) | translit ("STDIN"," ","+") | scan (lres)
print (fields) | translit ("STDIN"," ","+") | scan (lname)
if (fields == "") {
lpos = pos
}
ltype = format
loname = output
ldisp = display
lover = overplot
lplot = plot
tcat = mktemp ("tmp$tcat")
files (lres, sort-) | count ("STDIN") | scan (nres)
if (substr (lname, 1, 1) == "@") {
if (imaccess (substr (lname, 2, strlen (lname))) == yes) {
sections (lname, opt="root", > tcat)
count (tcat) | scan (nfields)
}
} else {
if (lpos == "") {
nfields = 1
} else {
files (lname, sort-, > tcat)
count (tcat) | scan (nfields)
}
}
# Simple error checking.
if (loname == "STDOUT" && ltype == "fits") {
error (0, "FITS output not allowed to STDOUT")
}
if (nres > 1 || nfields > 1) {
vodata (lres, "@"//tcat, size=size, samp=samp, count-, all-,
type="image", output=output, format=format)
delete (tcat, verify-, >& "dev$null")
return
}
# Resolve resource name
if (lres == "")
error (0, "No resource specified")
if (substr (lres, 1, 7) == "http://") {
url = lres
len = strlen (url)
if (substr(url,len,len) != '?' && substr(url,len,len) != '&') {
if (strstr ("?", url) == 0)
url = url // "?"
else
url = url // "&"
}
#} else if (access ("uparm$url") == yes) {
# list = "uparm$url" ; nread = fscan (list, url) ; list = ""
} else {
regdb ("resolve", lres, type="I", >& "dev$null")
if (regdb.status == 0 && regdb.svctype != "I") {
error (0, "Resource '" // lres // "' is not a catalog service")
} else if (regdb.status == 1) {
url = regResolver (lres) # not found, query the Registry
} else {
url = regdb.url
}
if (url == "INDEF") {
error (0, "Resource '" // lres // "' is not a known service")
}
}
# Make sure the URL has a trailing '/' or '&'
len = strlen (url)
if (substr(url,len-4,len) == "&")
url = substr (url, 1, len-5)
if (substr(url,len,len) != '?' && substr(url,len,len) != '&') {
if (strstr ("?", url) == 0)
url = url // "?"
else
url = url // "&"
}
# Determine the query params from the image WCS.
if (imaccess (lname) == no) {
if (lpos == "") {
sesame (lname, verbose-)
ra = sesame.ra
dec = sesame.dec
if (ldisp)
dss (lname, use_disp+)
lname = "cache$" // lname // ".fits"
args = "POS=" // lpos // "&SIZE=" // size
} else {
lname = ""
args = "POS=" // lpos // "&SIZE=" // size
}
} else {
wcsinfo (lname)
args = "POS=" // wcsinfo.pos // "&SIZE=" // wcsinfo.size
}
if (vo.runid != "")
args = args // "&RUNID=" // vo.runid
# Create a temporary output name.
tname = mktemp ("tmp$raw") // ".xml"
# Call the raw service via the URLGET generic task.
urlget (url//args, tname, extn="", use_cache+, cache="cache$")
if (samp)
samp ("loadVOTable", tname, id=lres, >& "dev$null")
# Get the size of the result table.
votsize (osfn(tname)) |& scan (nrows, ncols)
if (nrows == 0) {
print ("No results found.")
delete (tcat, verify-, >& "dev$null")
delete (tname, verify-, >& "dev$null")
status = 1
return
}
# Do the overlay if we displayed an image.
if (ldisp && lover && nrows > 0) {
votpos (tname, out=tcat, verb-, number+, header-)
taboverlay (lname, tcat, lab=1, ra=2, dec=3, mkcolor=207)
}
if (lplot)
votpos (tname, out="", verb-, plot+, number-, overplot=lover)
# If we didn't want a VOTable, convert the file and rename to
# desired output name
if (loname != "")
votcopy (tname, loname, ltype, header+, verb-)
delete (tcat, verify-, >& "dev$null")
delete (tname, verify-, >& "dev$null")
end
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