Contents
Grid cell center points
Branch data
Branch data is used to represent linear stretches of rivers, streams and canals. Each branch has an unique identifier (choosen by the module) a name, a start and end-chainage field, a link to an upper node and a link to a downstream node. A series of X, Y points defines the actual branch, the first point being the upstream node, the last point the downstream node. This date type is based on the EUROTAS ICM definition.
schema file, root element |
example file |
pi_branches.xsd, Branches |
branches.xml |
Example:
<?xml version="1.0" encoding="UTF-8"?>
<Branches xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews
pi_branches.xsd" version="1.1">
<geoDatum>LOCAL</geoDatum>
<branch>
<branchId>rhone3_24</branchId>
<branchName>A branch</branchName>
<startChainage>0</startChainage>
<endChainage>13</endChainage>
<pt x="12" y="31" chainage="0"/>
<pt x="18" y="36" chainage="9"/>
<pt x="22" y="38" chainage="12"/>
<pt x="24" y="33" chainage="18"/>
<pt x="37" y="0" chainage="13"/>
</branch>
<branch>
<branchId>rhone3_25</branchId>
<branchName>Another branch</branchName>
<startChainage>1</startChainage>
<endChainage>3</endChainage>
<pt x="37" y="0" chainage="0"/>
<pt x="40" y="40" chainage="1"/>
<pt x="45" y="55" chainage="2"/>
</branch>
</Branches>
The structure of the XML schema is given in the figures below. Note that attributes are not displayed in the figures. Consult the full schema (+documentation) for details.
Cross-sections
Cross sections are measured locations along a branch. As such they are linked to a specific branch (the branchId). Cross sections are always considered as being so-called YZ cross sections. This entails that the geometrical form of the cross section is described through a set of cross section co-ordinates, where the first co-ordinate represents the distance across the cross section, where this co-ordinate increases from left to right (i.e. lowest co-ordinate is on the left bank) and the second co-ordinate represents the elevation with respect to a common reference level.
schema file, root element |
example file |
pi_crosssections.xsd, CrossSections |
xsection.xml |
Example:
<?xml version="1.0" encoding="UTF-8"?>
<CrossSections xmlns="http://www.wldelft.nl/fews" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wldelft.nl/fews pi_crosssections.xsd" version="1.1">
<geoDatum>WGS-1984</geoDatum>
<crossSection>
<xSectionId>PR2</xSectionId>
<branchId>Mameyes2</branchId>
<xSectionName>Puento Rotto</xSectionName>
<chainage>10</chainage>
<x>18.3</x>
<y>1.0</y>
<xdata csy="21" z="18" roughness="0.4" mark="1"/>
<xdata csy="22" z="17" roughness="0.4" mark="2"/>
<xdata csy="245" z="18" roughness="0.4" mark="3"/>
</crossSection>
</CrossSections>
The structure of the XML schema is given in the figures below. Note that attributes are not displayed in the figures. Consult the full schema (+documentation) for details.
