Hello,
I am trying to attach multiple raster images totaling around 1 GB of data. The rasters are aerial images that were taken from NearMaps. I am having trouble with how slowly the rasters are loading. It can take up to 15 minutes for a few rasters to load, and I have never gotten all of the rasters to load (50 images) at the same time.
Does anyone have any suggestions on how I can get these aerials to load faster?
Thanks in advance.
You can improve the performance of raster handling within MicroStation by specifying the location to store cached files. This can be achieved by using both MicroStation and Windows variables. You can control where MicroStation caching is performed locally by creating a Windows variable called HMRTempDirectory. You can use this variable to define a specific location on your hard disk where caching is performed. To achieve this, firstly create a local directory (eg C:\RasterCache\). Then, from your desktop right click on the ‘My Computer’ icon and select ‘Properties.’ From the ‘Advanced’ tab, select ‘Environment Variables.’ Create a new variable called ‘HMRTempDirectory’ and define the location to the previously created location.
Within MicroStation you should then also create the configuration variable MS_RASTER_LOADMODE with a value of 3. Within MicroStation, go to the Workspace>Configuration menu and select ‘New’ to create the variable. This will ensure that the caching is performed in the defined location. This information can be found and explained in further detail by TechNote 6205 on Select Services.
http://communities.bentley.com/products/microstation/w/microstation__wiki/attaching-displaying-raster-images-in-microstation-cs.aspx
RegardsAndrew BellTechnical SupportBentley Systems
have you created a holding file and attached all the rasters to it then use this holding file as a reference file with the ref manager...
Another trick is to convert the jpgs to .TIFF ( georeferenced) via the raster manager then make new holding file and reattach the geo tiffs no sister files needed... I chose the no loss uncompressed option... seems to load faster for me..
another option from old school days still works well
create a map grid by attach one raster at a time, then trace its edges on a non print level and type in the name of the jpg as text inside the tile, turn off and proceed with next jpg untill all are mapped.. now you can use this as a grid or tile index and work out what jps to use or just have all turned off when attached as xref and use the raster manager to only turn on the tiles you actually need turn on...
one more option... look up package to join all the rasters together and let it join all the tiles together as one raster , this them loads faster for me than lots of little ones I dont get why but it does for me...
I use AU_ECW compressor
To compress one image file To compress several image files of the same size and shape into one file To add geo-referencing to an image file
no longer available.. web site gone, was free .. I have it installed but I dont have the install file any more...
Ok more digging around and found you can do it in GDAL but its not gui driven so hard to learn best next option is QGIS free gis can combine some geo ref rasters into one merged raster..
http://www.qgistutorials.com/en/docs/raster_mosaicing_and_clipping.html
Lorys
Started msnt work 1990 - Retired Nov 2022 ( oh boy am I old )
But was long time user V8iss10 (8.11.09.919) dabbler CE update 16 (10.16.00.80)
MicroStation user since 1990 Melbourne Australia.click link to PM me
Have you tried OpenRoads or MicroStation CONNECT ? The reason I ask is that there is an option to turn on a background map.
Timothy Hickman
CADD Manager | CADD Department
timothy.hickman@colliersengineering.com
Main: 877 627 3772|
1000 Waterview Drive Suite 201 | Hamilton, New Jersey 08691
here is an old post - now you no longer need to obtain a bing maps license
https://communities.bentley.com/products/microstation/b/microstation_blog/posts/bing-maps-in-microstation
I'm using the latest version of connect edition. Windows 10 64 bit with a ton of ram. Raster handling is a big problem. Geotiff (.tif) is terrible and Geotif with alpha is even worse. It takes about 4 or 5 minutes before Microstation even starts loading the raster image after all the vector information is loaded. It seems like the program has crashed, but I'll watch my resource viewer in windows and all of a sudden Microstation will decide to load the raster. My normal operation is to save rasters to ecw or JPG as connect edition handles these and loads these files much better, however the geotiffs I'm getting from our mapping supplier are 3 - 4 GB and Connect Edition is spitting up an error when trying to convert these files to ecw or JPG.