CImExtract:Count

The Count method returns the number of sources extracted from the image using the CImExtract:Extract method.

number = CImExtract:Count()

On success, this method returns the number of sources extracted from the image.

On failure, this method returns 0.

The following script extracts sources from an image and lists the x,y coordinates for all sources.

E = new_imextract()	-- create a CImExtract
-- select the image from an image window
V = attachlist_imageview()	-- get an image window
Assert( V, "No Image window selected")	-- exit if no image window selected
-- choose the image if image set has > 1 image
if V:Count() > 1 then	-- return the number of sources found
I = attachviewlist_image( V )
if I == nil then
Assert( I, "No Images are available")
end
else

bSuccess = E:Extract( I )	-- extract sources from CImage I
if not bSuccess then Exit("Extract failed") end

nSources = E:Count()	-- Get the number of sources
for n = 1,nSources do
local S = E:GetSource(n)	-- t is a table of data for source n
if S ~= nil then
Printf("%d:%lg,%lg\n", n, S.nCenterX, S.nCenterY)	-- list x,y of source n
end
end