help with closing binary image
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From: us on 12 Apr 2010 10:31 "M Ladderman" <mirresimons(a)gmail.com> wrote in message <hpv8i4$19c$1(a)fred.mathworks.com>... > http://picasaweb.google.com/mirresimons/Matlab#5459247749775648946 > > This is the picture from ASHAPE I get, so I want the coordinates of the red small rectangles. :), So I can draw a convex as in the picture, because this is perfectly fitting my fish.. woohoo :D according to ASHAPE's various help section, this is how you would do it... % see also: ashape -f; % <- show content of P p=ashape(x,y,r,'-g'); % <- do NOT plot... ns=p.nshape; % <- # alpha shapes... as=p.ashape; % <- CELL of indices ax/ay into p.x/p.y for alpha shapes ]1-ns[... xc=p.x(as{1}).'; % <- ax of alpha shape #1 NOTE: transpose(!)... yc=p.y(as{1}).'; line(xc,yc,'marker','s','color',[0,0,0]); us
From: M Ladderman on 12 Apr 2010 10:51 thanks us!! I know the help is very good I am sorry I just could not make sense of the output and the help on my own, again sorry and thanks for the help, I am close to getting my fish measurements automised finally! "us " <us(a)neurol.unizh.ch> wrote in message <hpvar8$ckm$1(a)fred.mathworks.com>... > "M Ladderman" <mirresimons(a)gmail.com> wrote in message <hpv8i4$19c$1(a)fred.mathworks.com>... > > http://picasaweb.google.com/mirresimons/Matlab#5459247749775648946 > > > > This is the picture from ASHAPE I get, so I want the coordinates of the red small rectangles. :), So I can draw a convex as in the picture, because this is perfectly fitting my fish.. woohoo :D > > according to ASHAPE's various help section, this is how you would do it... > > % see also: > ashape -f; % <- show content of P > > p=ashape(x,y,r,'-g'); % <- do NOT plot... > ns=p.nshape; % <- # alpha shapes... > as=p.ashape; % <- CELL of indices ax/ay into p.x/p.y for alpha shapes ]1-ns[... > xc=p.x(as{1}).'; % <- ax of alpha shape #1 NOTE: transpose(!)... > yc=p.y(as{1}).'; > line(xc,yc,'marker','s','color',[0,0,0]); > > us
From: us on 13 Apr 2010 17:22 "M Ladderman" <mirresimons(a)gmail.com> wrote in message <hpvc0o$28g$1(a)fred.mathworks.com>... > thanks us!! I know the help is very good I am sorry I just could not make sense of the output and the help on my own, again sorry and thanks for the help, I am close to getting my fish measurements automised finally! please note: ASHAPE has been updated with several new macros and output fields, and the published m-file now contains several examples for programmers on how to extract alpha shape and patch vertices from the output... us
From: EBS on 13 Apr 2010 20:12 ImageAnalyst <imageanalyst(a)mailinator.com> wrote in message <f2d1b2ac-4e40-4f6c-83ed-3ff92fb98eb4(a)b30g2000yqd.googlegroups.com>... > us > I thought this fish image wold be a good one for me to practice on > with your ashaper. I got this far but something's not right. I > thought I'd try something quick and dirty but I guess I need to really > dig into the options to figure it out. I need to get going now - > maybe I can pick it up later in the day. > > clc; % Clear the command window. > close all; % Close all figures (except those of imtool.) > clear all; % Erase all existing variables. IA, you give great advice but you should know better than to use 'clear all'! :) Using 'clear all' removes the compiled M-files from the cache, making MATLAB have to JIT compile them and slowing things down - and no one wants that! It also blows away any breakpoints that the user has set. Just plain old 'clear' is the command that you're looking for... Cheers
From: ImageAnalyst on 13 Apr 2010 21:48
On Apr 13, 8:12 pm, "EBS " <ericDOTsamp...(a)gmail.com> wrote: > IA, you give great advice but you should know better than to use 'clear all'! :) > > Using 'clear all' removes the compiled M-files from the cache, making MATLAB have to JIT compile them and slowing things down - and no one wants that! It also blows away any breakpoints that the user has set. > > Just plain old 'clear' is the command that you're looking for... > > Cheers ------------------------------------------------------------------------ clear would work too, or "clear variables". The other stuff that gets blown away by adding "all" I'm probably not using anyway, but I just do it for simple demos to make sure I'm starting from as clean a slate as possible. That's what the Mathworks instructor taught me years ago in my training class so I just stuck with it. It's never been a problem for me. But you're right that if you wanted to keep functions that you ran previously stored in memory and wanted to be superfast when/if you call them again you wouldn't use all. I know the help says that it blows away break points, but it does not. I do it all the time. I just tried it again just now on both a simple script and a function. My breakpoint remained and it stopped there. I tried running it both from the green "Run" triangle, and by typing the script name and function name into the command prompt. No difference - it always stops. Clear all does not disable breakpoints, regardless of (and contrary to) what the help says. |