OVERVIEW

The annotation in this datalayer is specifically placed and scaled to be used in conjunction with the 1:5,000 Black and White Digital Orthophoto images. They are tiled by Orthophoto Index Grid sheets. The naming convention for the contour layer is an "an" followed by the Index Grid ID. The Grid ID is the first 3 digits of the xy coordinate pair for the lower right corner of each cell.

The annotation is based on the USGS GEONAMES coverage. The annotation was selected and placed so that each Ortho Index Grid Sheet has identifiable landmarks. Each Index Sheet annotation coverage has road names, town names, hilltops, site names, streams, ponds and reservoirs. Arc/INFO annotation subclasses segregate the annotation into PLACE, ROAD and HYDRO. The point coverage associated with the annotation is used to locate marker symbols that differentiate the road types (State, U.S. Route, Interstate).

The SYMBOL item of the .PAT contains the code for the appropriate symbol. A specialized markerset and fontset have been developed for displaying the annotation on the Orthophotos.
 
  ITEM NAME   WIDTH  OUTPUT  TYPE  N.DEC  ALT. NAME
  SYMBOL        4       4      I     -        -

The MARKERINFO for OQROADS.MRK is:

Arcplot: markersym 4 (THIS IS FOR THE INTERSTATE ROUTES)
Arcplot: markerinfo

Markeroffset: X=0, Y=0
Markerscale factor is 1 in X, 1 in Y.

Layer Font Pattern    Angle      Size      Layer-Offset Pensize Linecap Linejoin
   1   31      52    0.000  0.200  0.200  0.000  0.000  0.030    BUTT    MITER
   1 Color: C-0.000% M-100.000% Y-100.000% K-0.000% (Red)
   1 Marker mask: NONE

Arcplot: markersym 5 (THIS IS FOR THE US ROUTES)
Arcplot: markerinfo

Markeroffset: X=0, Y=0 
Markerscale factor is 1 in X, 1 in Y. 

Layer Font Pattern    Angle      Size      Layer-Offset Pensize Linecap Linejoin
   1   31      50    0.000  0.200  0.200  0.000  0.000  0.030    BUTT    MITER
   1 Color: C-0.000% M-100.000% Y-100.000% K-0.000% (Red)
   1 Marker mask: NONE

Arcplot: markersym 6  (THIS IS FOR THE STATE ROUTES)
Arcplot: markerinfo

Markeroffset: X=0, Y=0
Markerscale factor is 1 in X, 1 in Y.

Layer Font Pattern    Angle      Size      Layer-Offset Pensize Linecap Linejoin
   1   31      51    0.000  0.200  0.200  0.000  0.000  0.030    BUTT    MITER
   1 Color: C-0.000% M-100.000% Y-100.000% K-0.000% (Red)
   1 Marker mask: NONE

The symbol numbers for the fonts used refer to the Arc/INFO textset FONT symbols. The revised textset F_HALO.TXT has "black" halos around "white" fonts so that the anno will be visible over white or black images. The size of the annotation is based on cartographic constraints as well as importance. This annotation is scaled specifically for display at 1:5000. The sizes listed below are for use in ARCEDIT and represent Meters. The meters to "Point size" conversion for a 1:5,000 scale [ (pts size * .014/39.37)*5000 ] is:

 10 pt. = 17.780 m
 12 pt. = 21.082 m
 14 pt. = 24.892 m
 18 pt. = 32.004 m
 14 pt. = 42.672 m
 36 pt. = 64.008 m

Each Subclass is segmented into the following layers:

 SUBCLASS:           LAYER:
 Hydro- Font #17     1) Size 64
                     2) Size 42
                     3) Size 32
                     4) Size 24
                     5) Size 21
                     6) Size 17
                     7) Size 14

 Road- Font #9       1) Size 21 (Roads Names)
                     2) Size 21 (Roads Numbers)

 Places- Font #16    1) Size 32
                     2) Size 24
 Font # 8            3) Size 21
 Font # 7            4) Size 21

Here is a typical listing of the $ALL items in ARCEDIT:
 
  $ID       =    7
  $SYMBOL   =    9
  $LEVEL    =    1
  $SIZE     =    21.08200
  $TEXT     =    LAKE
  $OFFSETX  =    0.00000
  $OFFSETY  =    0.00000
  $WORD     =    0
  $JUSTIFY  =    LL
  $FIT      =    OFF
  $ALIGN    =

This datalayer is maintained by MassGIS. Annotation is available for approximately ten percent of the state, mostly in the Quabbin-Ware-Wachusett Watershed area. There are no current plans to continue developing this layer.

Last Updated 3/1/2000
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