	Product(s):	MicroStation
	Version(s):	CONNECT Edition
	Environment:	N\A
	Area:	Raster
	Subarea:	N\A

Problem

I have a .dgn with raster attached. When I want to print it on a sheet of paper at 60x147 cm (23.6 x 57.9 inches) it takes at least 3 minutes. Without raster it takes only few seconds. Why this is happening and how can I improve printing time with raster attached?

Solution

1. Why this is happening?

60x147 cm, which is 23.6 x 57.9 inches is a big sheet of paper. When we print using print resolution 300dpi and 50% raster resolution (which means 150dpi raster):

that means 3543x8681 pixels of raster to transfer. We request tiles of 256x256 so we need 340 tiles of raster. If each request takes around 0.5 seconds that is almost 3 minutes just waiting for internet requests to the WMS server to give us what we need.

2. What is happening when you use option to print "Rasterized"?

When you print rasterized, we end up doing less requests but for bigger tiles, say 1024x1024. That is 16 times less requests. Even if those take around 1 second each, that would be 36 seconds of waiting instead of 3 minutes. WMS servers have a big overhead per request and are less affected by the quantity of pixels we ask for.

3. How can I improve printing time?

We can improve our printing time by:

printing rasterized:

using the lowest resolution that makes sense for your project:

not creating huge sheet of paper especially in pdf if we intend to consult it on screen
changing our quality factor which makes sense for ourproject:

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Original Author:

Klaudia Piekielniak

How can I improve printing time (.dgn with raster)?

Problem

Solution

See also

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