Perform a mapcheck analysis

00:06

In this video, we're going to discuss another method for obtaining traverse and closure data from a boundary using a command called Mapcheck.

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The command Mapcheck does a Mapcheck analysis based on two objects that we haven't discussed yet, which are parcels and parcel labels.

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In this file, I've created a parcel with partial labels for us to use in doing a Mapcheck analysis.

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To initiate Mapcheck analysis, type the command Mapcheck in the command line.

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When you initiate Mapcheck, this window for the Mapcheck will show up.

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We're going to go ahead and initiate a new Mapcheck by clicking the New Mapcheck button.

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When you initiate a new Mapcheck, Civil 3D is going to prompt you to enter the name of your Mapcheck.

00:50

For our Mapcheck, we're going to choose Boundary.

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For boundary where you need to specify the point of beginning for our Mapcheck,

01:00

we're going to go ahead and use the point of beginning from our previous traverse editor information.

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So we're going to go ahead and choose this point of beginning.

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What Civil 3D is then going to ask us to do is select a label for our Mapcheck analysis.

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The first label that we have is a curve.

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What you need to know about curves in Mapcheck analysis is that if you have a curve that is a non-tangential curve,

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you have to include data in these labels that includes the chord bearing and the chord length for Mapcheck analysis,

01:35

to accurately depict what is happening in your boundary.

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So I'm going to click this label, and this curve you can see, it's curving the wrong direction to match your boundary.

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So what we're going to go ahead and do is we're going to hit "F" for flip.

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You'll notice that it flips the curve and has it in the correct direction.

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So we'll go ahead and select the next label, and keep moving onwards.

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If it's displaying appropriately, then we don't need to worry about flipping or rotating or reversing.

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So we're going to go ahead keep clicking through until we get back to our point of beginning.

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Once we've gotten back to our point of beginning, we're ready to end our traverse.

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And so we're going to go ahead and hit enter to end that Mapcheck.

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So inside of the Mapcheck analysis window, if you select this button, the Output View,

02:20

it will give us all of the information on our Mapcheck analysis that was just performed.

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It will give us our precision, our error distance, and our error direction.

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To take this information and put it into usable form,

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you can take it and you can create a label inside of Civil 3D with Mtext by selecting the Insert Mtext and then selecting a insertion point.

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So you can see that Mtext gets displayed inside of Civil 3D,

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and it gives you all of the information about your traverse and your errors for your closure.

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If you want to take this information and paste it into a word document, you can go ahead and select the copy to clipboard.

03:01

And when you do that, if you want to insert it into a notepad, you can type in notepad into Civil 3D and then hit enter.

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And then when it asks you for a file to edit, you can hit enter and it will open a untitled notepad.

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And you can select inside of the untied notepad and hit Ctrl+V and it will paste all of your Mapcheck analysis data into your notepad.

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This is important because this is another method for obtaining traverse data and closure data,

03:35

to use in a traverse and closure report for your Civil 3D entities.