20181119 15012000 TRUE 20250219 14580600 1.0 North American Profile of ISO19115 2003 elvContour5M2011 595000.000000 649980.000000 4842000.000000 4917100.000000 1 002 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_UTM_Zone_17N <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.5'><WKT>PROJCS[&quot;NAD_1983_UTM_Zone_17N&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Transverse_Mercator&quot;],PARAMETER[&quot;False_Easting&quot;,500000.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-81.0],PARAMETER[&quot;Scale_Factor&quot;,0.9996],PARAMETER[&quot;Latitude_Of_Origin&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,26917]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>10000</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>26917</WKID><LatestWKID>26917</LatestWKID></ProjectedCoordinateSystem> 20190416 14475000 FGDC 150000000 5000 ArcGIS Metadata 1.0 withheld Feature Class Contours, 5 metre 2011 2012-01-23T00:00:00 vector digital data data@york.ca Data, Analytics and Visualization Services Branch York Region, Data, Analytics and Visualization Services Branch First Base Solutions Inc. First Base Solutions Inc. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The data is not scheduled for any further updates.</SPAN></P><P><SPAN>This data set displays the elevation contour lines for the Regional Municipality of York, Ontario Canada. The interval of the contours is 5 metre and is stated above mean sea level.</SPAN></P></DIV></DIV></DIV> To represent 5 metre elevation contour lines for the Regional Municipality of York, Ontario Canada. Aurora, East Gwillimbury, Georgina, King, Markham, Newmarket, Richmond Hill, Vaughan, Whitchurch-Stouffville, York Region, Ontario Spatial Data Contour Interval DEM Digital Elevation Model Elevation -79.820518 -79.116897 43.715868 44.400958 Low Security <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Available to York Region users, consultants working on behalf of York Region, York Info Partners, consultants working on behalf of York Info Partners, viewable to the public.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV> Version 6.2 (Build 9200) ; Esri ArcGIS 10.5.1.7333 Spatial Data Source : First Base Solutions elvContour5M2011_trpRampBridgeSections 2011 Contours 5M - trpRampBridge Sections 2012-01-23 The Regional Municipality of York vector digital data elvContour5M2011_trpRampBridgeErased 2011 Contours 5M - trpRampBridge Sections Erased 2012-01-23 The Regional Municipality of York vector digital data ELVGROUNDELEVATION2011 2011 Ground Elevation 2012-01-23 The Regional Municpality of York raster digital data *Note - Two "ELVGROUNDELEVATION2011" layers were created during elevation data processing. A cell size of 10m was used for the layer published to SDW (Spatial Data Warehouse) and a cell size of 20m was used for the layer in which contours were derived from. elvBreaklines2011 2011 Breaklines 2011-10-20 First Base Solutions Inc. vector digital data withheld elvMassPoint2011 2011 Masspoints 2011-10-20 First Base Solutions Inc. vector digital data withheld elvContour1M2009 2009 Contours 1M 2010-05-31 The Regional Municipality of York vector digital data elvContour1M2011_trpRampBridgeSections 2011 Contours 1M - trpRampBridge Sections 2012-01-23 The Regional Municipality of York vector digital data trpRampBridge trpRampBridge 2012-01-23 The Regional Municipality of York vector digital data withheld elvContour1M2011_trpRampBridgeErased 2011 Contours 1M - trpRampBridge Sections Erased 2012-01-23 The Regional Municipality of York vector digital data elvContour5M2011 2011 Contours 5M 2012-01-23 The Regional Municipality of York vector digital data elvContour1M2011 2011 Contours 1M 2012-01-23 The Regional Municipality of York vector digital data Clipping out the sections of contour that fall within the trpRampBridge feature class. (These features will be merged back into the original contour dataset albeit coded differently. a) Open the "ContourtrpRampBridgeSections" tool from the "Elevation_Data_Processing" toolbox. b) Populate parameters using the following settings; Input Features = elvContour1m2011 Clip Features = trpRampBridge Output Features Class = elvContour1m2011_trpRampBridgeSections XY Tolerance = Leave blank (default) c) Press Run *Note this process will approximately take the following amount of time; 1m(Elapsed Time: 12 minutes 20 seconds) 5m(Elapsed Time: 35.00 seconds) 2012-01-23T00:00:00 trpRampBridge 2011 Contours 5M 2011 Contours 1M Creating the Raster (ELVGROUNDELEVATION2011) (Cell Size 10) - -Converting elvMassPoint2011 to Raster a) Open the "PointToRaster" model from the "Elevation_Data_Processing" toolbox. Parts of the model with a "P" beside them indicate model parameters. b) Populate parameters using the following settings; Input Features = elvMassPoint2011 Value Field = Elevation Output Raster Dataset = elvGroundElevation2011_Cell10 Cell Assignment Type (Optional) = Mean Priority Field (Optional) = None Cell Size (Optional) = 10 c) Press Run *Note - this process takes a significant amount of time Cell 10 = (Elapsed Time: 1 hours 3 minutes 12 seconds) Cell 20 = (Elapsed Time: 20 minutes 24 seconds) *Note - Two rasters will be created, one using a cell size 10 and one using a cell size 20. The cell size 20 raster will be used for contour creation in order to create less noisy contours. The cell size 10 raster will be used as the final ground elevation raster dataset. 2012-01-23T00:00:00 2011 Masspoints Prepare DTM data The DTM data needs to be processed before contour and raster products are derived. Breaklines are classified in order to differentiate the "ramp or bridge" sections from the rest of the elevation dataset. a) Classify Breaklines as "Ramp or Bridge" The Breaklines were classified by the "DESCR" field as follows: Select by Attributes > "DESCR" = 'Bridge' b) Export the selected records to the local working File Geodatabase calling it "Bridge_2011." c) The "Bridge_2011" feature class was then compared with the existing trpRampBridge feature class in the Enterprise GIS in order to identify new features. Updates from the 2011 Elevation Dataset were distinguished using a Simple "Select by Location" SQL Query. Select by Location > - Select Features From: Bridge - Source Layer: trpRampBridge - Spatial Selection Method: Target layer (s) features intersect the source layer feature. Once the intersecting features were identified, the selection was reversed in order to identify the updated features. Once identified, the features were exported to the local File Geodatabase as "Bridge_Updates_2011" feature class. *Note - This feature is a polyline dataset where as the trpRampBridge feature class is a polygon dataset. Using the recently exported feature, the trpRampBridge feature class was updating via manual digitizing. Litterally, every feature update was examined and polygons were created accordingly. These revised trpRampBridge feature class is later used for differentiating the "Ramp or Bridge" sections from the rest of the elevation data. 2012-01-23T00:00:00 trpRampBridge Rebuild Raster Pyramids As an attribute to the default resampling method (Nearest Neighbour) utilized during raster creation, initially the raster may display with black boxes at the edge of the dataset at full zoom extent. The pyramids first have to be erased then rebuilt in order for the raster to display correctly. With the nearest neighbour sampling method, the no-data areas surrounding the dataset is being taken into consideration. When rebuilding the pyramids, the "Cubic" resampling method is preferred and will be used. a) Right-click the raster layer (elvGroundElevation2011) > Build Pyramids > Environments b) Expand the "Raster Processing" environment setting and change the the pyramid level setting to 0. Make sure the 'Build Pyramids" check box is selected. Select "Ok" to erase the pyramids. c) Repeat the previous step but change the pyramid level setting to 5 and change the pyramid resampling technique to "Cubic." Make sure the 'Build Pyramids" check box is selected. Make sure the "Calculate Statistics" check box is also selected. Select "Ok" to re-create the pyramids. d) The raster should now display properly with out the black "no-data" boxes on the edges of the dataset. 2012-01-23T00:00:00 2011 Ground Elevation Creating the final "elvContour1M2011_Differentiated_Descriptor" and "elvContour5M2011_Differentiated_Descriptor" layers. *Note - Upon publishing, the layers will be referred to as "elvContour1M2011" and "elvContour5m2011." a) Open the "MergetrpRampBridgeSections" model from the "Elevation_Data_Processing" toolbox. b) Populate parameters using the following settings; Input Features = elvContour1m2011_trpRampBridgeErased, elvContour1m2011_trpRampBridge_Sections Output Dataset = elvContour1m2011_Differentiated_Descr c) OK d) Repeat steps a) through c) for the 5M datasets. *Note this process will approximately take the following amount of time; 1m(Elapsed Time: 4 minutes) 5m(Elapsed Time: 38 seconds) 2012-01-23T00:00:00 2011 Contours 5M - trpRampBridge Sections 2011 Contours 5M - trpRampBridge Sections Erased 2011 Contours 1M - trpRampBridge Sections 2011 Contours 1M - trpRampBridge Sections Erased Erasing the contour intervals that fall within the trpRampBridge feature class. In order to differentiate between actuall contour intervals and "Ramp or Bridge" sections the latter type must be first clipped out, classified as "Ramp or Bridge", then merged back into the dataset. *Note - You will need an ArcInfo Licence to run this tool. a) Open the "Contour_trpRampBridgeErase" tool from the "Elevation_Data_Processing" toolbox. b) Populate parameters using the following settings; Input Features = elvContour1m2011 Erase Features = trpRampBridge Output Features Class = elvContour1m2011_trpRampBridgeErased XY Tolerance = Leave blank (default) c) Press Run *Note this process will approximately take the following amount of time; 1m (Elapsed Time: 11 minutes 36 seconds) 5m Elapsed Time: 1 minutes 27 seconds) 2012-01-23T00:00:00 trpRampBridge 2011 Contours 5M 2011 Contours 1M Load multipoint data into SDE Trying to merge all the multipoint tiles into one feature class takes a considerable amount of time in both python and model builder environments. Loading through SDE is much more efficient. The elevation data is loaded into SDE via a number of Windows NT Command Scripts. Processing times for these loads can vary, but on average, load times were around 5 hours collectively. Once the data has been loaded into the SDE environment, data was exported to a local File Geodatabase where the remaining processing steps were carried out. *Note - All geoprocessing was carried out in an ArcInfo 10.0 environment. Final datsets were then converted back to version 9.2 to match the version being used in the Enterprise GIS. 2012-01-23T00:00:00 2011 Masspoints 2011 Breaklines Creating the "Descriptor" field and populating attribute values to each feature in order to distinguish the "contour" features from the "Ramp or Bridge" sections. a) Bring the following feature classes into ArcMap; -elvContour1M2011_Cell20_trpRampBridge_Sections -elvContour1M2011_Cell20_trpRampBridgeErased -elvContour5M2011_Cell20_trpRampBridge_Sections -elvContour5M2011_Cell20_trpRampBridgeErased b) Create the new "Descriptor" field in each of the previously mentioned feature classes using the following parameters; Name = Descriptor Type = Text Length = 50 c) Populate the "Descriptor" fields for each layer accordingly. Use the following parameters; -elvContour1M2011_trpRampBridgeSections = "Ramp or Bridge" -elvContour5M2011_trpRampBridgeSections = "Ramp or Bridge" -elvContour1M2011_trpRampBridgeErased = "Contour" -elvContour5M2011_trpRampBridgeErased = "Contour" 2012-01-23T00:00:00 2011 Contours 5M - trpRampBridge Sections Erased 2011 Contours 1M - trpRampBridge Sections Erased Creating the Contours from the Raster (ELVGROUNDELEVATION2011) (Cell Size 20) a) Open the "Contour from PointToRaster" tool from the "Elevation_Data_Processing" toolbox Parts of the model with a "P" beside them indicate model parameters. b) Populate parameters using the following settings; Input Features = elvGroundElevation2011 Output Polyline Features = elvContour1m2011 Contour Interval = 1 Base Contour = 0 Z Factor (Optional) = 1 c) Press Run *Note - this process may take up to 1 hour to run. d) Repeate steaps a) through c) to create the 5m contours. Populate parameters using the following settings; Input Features = elvGroundElevation2011 Output Polyline Features = elvContour5m2011 Contour Interval = 5 Base Contour = 0 Z Factor (Optional) = 1 *Note - this process may take up to 45 minutes to run. 2012-01-23T00:00:00 2011 Ground Elevation Metadata Updated 2012-02-03T00:00:00 Metadata Imported 2012-02-03T00:00:00 2009 Contours 1M elvContour5M2011 Feature Class 18396 OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 ID SHAPE Geometry 4 0 0 Feature geometry. ESRI Coordinates defining the features. CONTOUR ID Integer 4 10 0 DESCRIPTOR CONTOUR Double 8 38 8 SHAPE DESCRIPTOR String 50 0 0 Feature geometry. ESRI Coordinates defining the features. Shape Feature geometry. ESRI Coordinates defining the features. SHAPE.STLength() Double 0 0 0 Id ID York Region Contour Contour elevation in meters above mean sea level York Region Descriptor Feature Clasification to distinguish "contours" from "ramp or bridge" sections. York Region dataset EPSG 6.13(3.0.1) 18396 Simple FALSE 18396 TRUE FALSE 20250219