[mapguide-users] Maestro - RenderRuntimeMap questions

[djonio]

Kenneth,

 

I am using the MaestroAPI.

public Stream
<http://msdn2.microsoft.com/en-us/library/System.IO.Stream>
RenderRuntimeMap(
   string <http://msdn2.microsoft.com/en-us/library/System.String>
resourceId, 
   double <http://msdn2.microsoft.com/en-us/library/System.Double>  x, 
   double <http://msdn2.microsoft.com/en-us/library/System.Double>  y, 
   double <http://msdn2.microsoft.com/en-us/library/System.Double>
scale, 
   int <http://msdn2.microsoft.com/en-us/library/System.Int32>  width, 
   int <http://msdn2.microsoft.com/en-us/library/System.Int32>  height, 
   int <http://msdn2.microsoft.com/en-us/library/System.Int32>  dpi
)

I don't seem to have a "format" parameter. The above, from the docs,
conforms to the intellisense that I see at design time.

r,

dennis

________________________________

From: Kenneth Skovhede, GEOGRAF A/S (via Nabble)
[mailto:ml-user+64672-2059353669 at n2.nabble.com] 
Sent: Monday, June 08, 2009 2:58 AM
To: Jonio, Dennis (Aviation)
Subject: Re: [mapguide-users] Maestro - RenderRuntimeMap questions

 

1) 
Not sure what the max values are, you will have to look 
through the MapGuide source to find the limits 
(fairly large in my experience). 

2) 
If you use MaestroAPI, just set the "format" parameter to "JPG", 
there is a similar parameter in the http interface and native API. 

3) 
DPI = Dots Pr Inch 
So DPI defines how many pixels that your output device can display pr.
inch, 
and is used to calculate the display extent of geometry on your screen 
or printer. 

Scale is the display scale, eg. 1:500 or 1:1000. 

Say you have an object that is 1000 inches wide, and display it 
in 1:500, it would be two inches on screen. 

If you set DPI = 96, you get 96 pixels pr. inch, resulting 
in the object being 192 pixels wide in the image. 

Regards, Kenneth Skovhede, GEOGRAF A/S 



djonio skrev: 


> Just some basic questions: 
> 
> What is the max value for width and height? 
> Is there a way to change the output from a png to jpg? 
> I am unable to discern the relationship between dpi and scale -  would

> someone be willing to explain the relationship between them? 
> r, 
> dennis 
> 
>   

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