I tried the code as well on a Kubuntu distro. It shows up very quickly both with a jdk1.5 without native jai libs installed as well as with a 1.6 with jai native install.
Cheers Andrea Simone wrote: > Ciao steve, > that might explain this sloweness. > > I have tried on fedora 5 and it is even faster than on windows xp. > > One advice. please install the JAI ImageIO tools package since it ships with > a nice > native encoder for png which should make things a bit faster anyway. > > > Let us know if you have more problems. > > Regards, > Simone. > > > ----- Original Message ----- > From: "Steve.Ansari" <[EMAIL PROTECTED]> > To: "Simone Giannecchini" <[EMAIL PROTECTED]> > Cc: <geotools-gt2-users@lists.sourceforge.net> > Sent: Monday, February 05, 2007 2:59 PM > Subject: Re: [Geotools-gt2-users] Slow rendering of GridCoverage objects > > >> Hi Simone/Andrea, >> >> I'm using: >> Java jre1.5.0_04 >> JAI installed from: jai-1_1_3-lib-windows-i586-jre.exe >> ImageIO from standard Java API - no native installs >> >> I isolated the slowness to this line in GridCoverageRenderer: >> graphics.drawRenderedImage(finalImage, cloneFinalWorldToGrid); >> >> >> After some googling, I found this resolved Sun bug report: >> http://bugs.sun.com/bugdatabase/view_bug.do;jsessionid=8d01140ef3bea515d4807d013cfa:YfiG?bug_id=5073407 >> >> However, this should be fixed in my JRE version and the example code >> with the bug report runs fine for me. >> >> I'm now going to try with the nightly snapshot. >> >> Thanks for looking into this, >> Steve >> >> >> >> >> >> >> Simone Giannecchini wrote: >>> Ciao Andrea, >>> I doubt it depends on differences between 2.3.0 and the actual code, >>> but I want to check. >>> >>> Since the timed code contains a write operation performed using >>> ImageIO directly it might be and old version of ImageIO giving >>> problems, or the absence of the native codec for PNGs, or difference >>> of performance on a different platform (I only tested on windows for >>> the moment). >>> >>> With a bit more info, I will try to spot the source of these problems. >>> Simone. >>> >>> >>> On 2/5/07, Andrea Aime <[EMAIL PROTECTED]> wrote: >>>> Simone Giannecchini ha scritto: >>>>> Ciao Steve, >>>>> I need a couple more info about your platform: >>>>> >>>>>> java version >>>>>> os >>>>>> JAI and ImageIO version >>>>> >>>>> I ran your example as it was (well, to be honest I removed the line >>>>> where you were showing the created coverage) and I got the following >>>>> execution time: >>>>> >>>>> PROCESSING TIME: 7.86 SECONDS >>>>> >>>>> I am using geotools 2.3.x compiled from SVN. >>>>> >>>>> If you provide me with more info, I can try to spot the cause of your >>>>> problems. >>>> Simone, may it be that the changes performed after the 2.3.0 release >>>> account for this speed difference? >>>> Cheers >>>> Andrea >>>> >>>> ------------------------------------------------------------------------- >>>> >>>> Using Tomcat but need to do more? Need to support web services, >>>> security? >>>> Get stuff done quickly with pre-integrated technology to make your >>>> job easier. >>>> Download IBM WebSphere Application Server v.1.0.1 based on Apache >>>> Geronimo >>>> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >>>> _______________________________________________ >>>> Geotools-gt2-users mailing list >>>> Geotools-gt2-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >>>> >>> >> -- >> Steve Ansari >> Physical Scientist >> NOAA's National Climatic Data Center >> Veach-Baley Federal Building >> 151 Patton Avenue >> Asheville, NC 28801 >> Ph: 828-271-4611 >> Fax: 828-271-4022 >> >> >> ------------------------------------------------------------------------- >> Using Tomcat but need to do more? Need to support web services, security? >> Get stuff done quickly with pre-integrated technology to make your job >> easier. >> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo >> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 >> _______________________________________________ >> Geotools-gt2-users mailing list >> Geotools-gt2-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier. > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Geotools-gt2-users mailing list > Geotools-gt2-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > -- ____________________________________________________________________________ HydroloGIS - Environmental Safety Modelling www.hydrologis.com Andrea Antonello Environmental Engineer mobile: +393288497722 "Let it be as much a great honour to take as to give learning, if you want to be called wise." Skuggsja' - The King's mirror - 1240 Reykjavik ____________________________________________________________________________ ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Geotools-gt2-users mailing list Geotools-gt2-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
