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Tuesday 25 Aug 2009, 12:45 PM
If you didn't manage to attend the "Throw Away Your Tile Cache" webinar, here are the powerpoint slides i used, as well as a video recording.

It was a real pleasure to show off the hard work of the IWS engineers in this webinar.  The team constantly impress with their mantra "performance".

Hardware resources and hardware speed are just like money.  There is never enough!  You always want faster!  Even with the multi-core systems that are out today, you still want more speed.  Yeah, your new computer might seem fast now, but give it a week (or a couple of days)...

This is why I really, really like the IWS development engineers.  They will go to amazing lengths to get the most out of hardware. 

Many engineers or engineering teams out there don't have this sort dedication to performance.  They just think that more hardware can be bought.  But, we know, that there is never enough.  Even if you can afford it. 

Getting the most out of your hardware is definitely going to help in todays economics.  Regardless of what your hardware vendor (or maybe IT guy) says!


So, please enjoy:

PowerPoint - Throw Away Your Tile Cache (~2.2 MB)

Movie of "Throw Away Your Tile Cache"  (~50MB Windows Media File)

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Wednesday 19 Aug 2009, 03:8 PM
Image Web Server can now serve your vector data at the same blazing fast speed it serves image data!

Next Tuesday, 25th of August, Richard Orchard, Product Manager of Image Web Server,  will be hosting a webinar previewing this exciting, upcoming feature of Image Web Server. 

The webinar will show you how you can effectively serve both image and feature data with Image Web Server at unbelievably fast speeds.  In particular, new features of the "optimized tile delivery" functions of Image Web Server will be reviewed.  A comparison of the new technology against a "tile cache server" setup will also be made.

If your organization is interested in creating a public access website, this webinar will show you how easy and inexpensive the most powerful geospatial serving engine is to implement....

Friday 07 Aug 2009, 12:25 PM

Google and Microsoft Virtual Earth both use a Spherical Mercator projection for their geospatial data.  This is represented by the EPSG code of 900913.

This particular coordinate system converts the earth into a perfect square.  This fits perfectly with the square image tiles that are delivered by the Google and Microsoft Systems....


Thursday 06 Aug 2009, 04:31 PM
Our development team, on top of getting ready for a big release in the fourth quarter, has released an update to our popular ECW Plug-in for AutoCAD.  The plug-in allows massive images to be viewed with ease in an AutoCAD environment.  The images can be accessed locally (in ECW or JPEG 2000 format), or even better, via ECWP from Image Web Server.

The new version resolves some issues with AutoCAD 2009, when it had the latest service pack applied to it.

At the same time, the developer looking at the AutoCAD plugin, David Carter, also managed to extend support to AutoCAD Map and Map 3D.  There has been some demand for this in the past, so I am hoping that this inclusion will make a few people happy out there.

You can download the plug-in from:  http://www.erdas.com/tabid/84/currentid/2508/tabview/downloads/default.aspx

Specifically, you want to get the file:  AutoCAD 2007 / 2008 / 2009 + AutoCAD Map 2008 / 2009 ECW JPEG 2000 plug-in 2.3

We are aware that the install process may not be smooth for people with a custom install of AutoCAD.  If you fall into this category, we have some simple instructions for a Manual install of ERDAS AutoCAD v2.3.doc

The plug-ins are provided free-of-charge, and we hope you find them useful.  If you have any questions, please post them in the ERDAS Community Forum at http://community.erdas.com/ .  ....

Wednesday 05 Aug 2009, 01:53 PM
J2i files speed up the delivery of JPEG 2000 files.

J2i files are an "index" of the JPEG 2000 file.  Indexes of JPEG 2000 files can be many hundreds of megabytes in size.  J2i files are automatically created by Image Web Server and used to speed up decoding and lower the memory overhead....
     Projection:    Datum:    EPSG:    Scale: 1 :     Image Size:       View in desktop