A note about data scale:
Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modelling purposes. Please be sure you are using the best available data.
1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger.
Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: <http://geoplan.ufl.edu/education.html>
Florida Geographic Data Library: <http://www.fgdl.org>
-Bridges Over Hydrological Features -Shapefiles HY24L and RDS24 for the State of Florida were used to build the Bridges over hydrological features dataset.
-Select by Attribute in the HY24L dataset. Set DESC1 = Right bank or Left bank Export Selection (HY24L_lbrb)
-Select by Location in the previous created (HY24L_lbrb) dataset -Select (HY24L_lbrb) that Intersects RDS24 -Export Selection (HY24L_lbrbsm)
-Select by Location in the RDS24 dataset Select RDS24 that Intersects previous created (HY24L_lbrbsm) dataset Export Selection (RDS24_lbrbsm)
-In ArcView 3.2 Turn on Extension 1st Tools Open layers (RDS24_lbrbsm), and (HY24L_lbrbsm) in View Activate 1st Tools Select Calculates the location of intersection points of two themes: polyline or polygon.
-Select both layers and Name Output (Inters_ST) -ADD XY Coordinates, using 1st Tools.
-Open previous created (Inters_ST) dataset Attribute Table, if the original FID for the RDS24 does not appear then join the RDS24 Table through a Spatial Join.
-In ArcView 3.2 Turn on Extension: Points to Lines or Polylines. Open previous created (Inters_ST) dataset and Select Points to Lines or Polylines button.
-In the Points to Lines or Polylines Window Select the X Field to be the X_coord Select the Y Field to be the Y_coord Select the Feature ID Field to be the RDS24 Original FID Select the Vertex ID Field to be Id Select the Attribute Field to be the RDS24 Original Descript Field Select the line type to be Segmented Select Yes for Calculate Statistics Select Yes for Trap points events Save lines and points to a Directory of your choice. Select Proceed at the bottom of the Screen. The ArcView viewer will contain the line and point datasets after the process has finished running.
-If you are having trouble reading the Lines dataset then activate the Lines Theme and select the Theme Drop down menu, and Convert to Shape (save in a directory of your choice), this will be the new bridges dataset.
-New Water based Bridges Dataset containing 1355 Records (New Bridges). -QAQC against DOQQs.
-Select by Location; Create New Selection that intersects the FGDL Bridges dataset Apply buffer of 100 Meters to FGDL Bridges dataset. -Marked DATASET field as BRIDGES.
-Select by Location; Create New Selection that intersect the FGDL FACCROSS Bridges dataset Apply buffer of 100 Meters to FGDL Bridges dataset. -Select by Attribute; Remove Form Current Select, DATASET = ''. -Maerked DATASET field as BRIDGES_FACCROSS.
-Select by Location; Create New Selection that intersect the FGDL FACCROSS Bridges dataset Apply buffer of 100 Meters to FGDL Bridges dataset. -Select by Attribute; Remove Form Current Select, DATASET <> ''. -Marked DATASET field as FACCROSS. -Marked all other rows where DATASET = '' as NO OVERLAP.
-The Shapefile was created using the FGDL Albers HPGN map projection