https://wiki.tuflow.com/w/index.php?action=history&feed=atom&title=Tute_M05_Calculate_Afflux_MapInfo_Archive 2026-05-19T08:33:57Z Revision history for this page on the wiki MediaWiki 1.43.8 https://wiki.tuflow.com/w/index.php?title=Tute_M05_Calculate_Afflux_MapInfo_Archive&diff=31394&oldid=prev 2023-01-08T23:44:39Z

<p>Created page with &quot;=Introduction= In this page we will use MapInfo / Vertical Mapper to compare the developed and existing case flood levels. =Method= &lt;ol&gt; &lt;li&gt;The results grids first need to be...&quot;</p> <p><b>New page</b></p><div>=Introduction=<br /> In this page we will use MapInfo / Vertical Mapper to compare the developed and existing case flood levels.<br /> =Method=<br /> &lt;ol&gt;<br /> &lt;li&gt;The results grids first need to be imported into Vertical Mapper before we can perform a grid calculation. To do this from the menu select &#039;&#039;Vertical Mapper &gt;&gt; Create Grid &gt;&gt; Import Grid&#039;&#039;.&lt;/li&gt;<br /> [[File:Vertical Mapper Import Grid.jpg|frame|none]]<br /> &lt;li&gt;Navigate to the &#039;&#039;&#039;TUFLOW\Results\M05\2D\&#039;&#039;&#039; folder and select both the &#039;&#039;&#039;M05_5m_dev_001_hMax.asc&#039;&#039;&#039; and &#039;&#039;&#039;M05_5m_exg_001_hMax.asc&#039;&#039;&#039; grids.&lt;/li&gt;<br /> &lt;li&gt;When prompted for the projection, select &#039;&#039;&#039;Universal Transverse Mercator (WGS 84)&#039;&#039;&#039; from the category drop list and then select &#039;&#039;&#039;UTM Zone 60, Southern Hemisphere (WGS84)\p32760&#039;&#039;&#039;. Select the option to &#039;&#039;&#039;Use for all imports of similar type&#039;&#039;&#039;.&lt;/li&gt;<br /> [[File:Tute M05 VM Projection.jpg|frame|none]]<br /> &lt;li&gt;Set the Z units to &#039;&#039;&#039;Metres&#039;&#039;&#039; and ensure the &#039;&#039;&#039;Use for all imports of similar type&#039;&#039;&#039; is checked.&lt;/li&gt;<br /> [[File:Tute M05 VM Z Units.jpg|frame|none]]<br /> &lt;li&gt;Select OK and Vertical Mapper will import both grids.&lt;/li&gt;<br /> [[File:Tute M05 VM Both Grids.jpg|400px]]<br /> &lt;li&gt;From the Vertical Mapper Grid Manager select &#039;&#039;&#039;Analysis &gt;&gt; Calculator&#039;&#039;&#039;&lt;br&gt;<br /> &#039;&#039;&#039;TIP: &#039;&#039;&#039;If this is not visible, select &#039;&#039;Vertical Mapper &gt;&gt; Show Grid Manager&#039;&#039; from the menu item.&lt;br&gt;<br /> [[File:Tute M05 VM Grid Calculator.jpg|400px]]<br /> &lt;li&gt;Set the expression to be the developed case minus (-) the existing case.&lt;li&gt;<br /> [[File:Tute M05 VM Expression.jpg|350px]]<br /> &lt;li&gt;Set the output name to &#039;&#039;&#039;M05_5m_001_dhMax.tab&#039;&#039;&#039; and the Vertical Units to &quot;Metres&quot;.&lt;br&gt;<br /> &#039;&#039;&#039;TIP:&#039;&#039;&#039; If you would prefer the impacts in millimetres the expression can be evaluated as (Grid1 - Grid2)*1000.&lt;/li&gt;<br /> &lt;li&gt;The resulting grid shows the impacts where both the developed and existing case scenarios were wet.&lt;/li&gt; <br /> &lt;li&gt;This can be coloured using the &#039;&#039;&#039;Colour&#039;&#039;&#039; options in the Vertical Mapper Grid Manager. These can also be contoured with the &#039;&#039;&#039;Contour&#039;&#039;&#039; options in the Vertical Mapper Grid Manager. The contoured results are shown below.&lt;br&gt;<br /> [[File:Tute M05 VM Contoured Results.jpg|500px]]<br /> &lt;br&gt;<br /> &lt;/ol&gt;<br /> =Conclusion=<br /> MapInfo / Vertical Mapper has been used to calculate the flood afflux. Please return to the &lt;u&gt;[[Tutorial_Module05_Archive#Compare_results |Module 5.]]&lt;/u&gt;</div>

ElizaCollison