Ask A Cartographer

Speed of display

June 16 2010 | 0 comments
Categories: Symbology


I `m creating a symbol for web maps.
For greater efficiency of display symbols I doing it with "Character Marker Symbol."
Is there a contraindication to the use of other fonts?
How are the fonts of ESRI differ from others?
Will there be a visible difference on the speed of display?

Mapping Center Answer:

While Character marker symbols can draw very fast, there are a few things you should know:

  1. The simple marker symbols draw the fastest--but at a trade-off of refinement in display quality and there are not many options for symbols (round square, plus...)
  2. The character markers that draw the fastest have very simple geomtries (fewer vertices is better). Many characters are built with true curves, and these generally go fast too.  Fancy, ultra-descriptive symbols will draw slower--there is just more to draw.
  3. Size matters.  The bigger the symbol the slower it draws. 

As for ESRI's fonts being different, one way is that we took care to not have any extra vertices or gratuitous detail. 

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