Ik volg de les Voorspel overstromingen met unit hydrographs | Learn ArcGIS en bij de sectie "Maak een Unit Hydrograph: Bereid de Unit Hydrograph-tabel voor," #13, krijg ik deze foutmelding: FOUT 002717: Ongeldige Arcade-expressie, Arcade-fout: Puntkomma of nieuwe regel verwacht, Scriptregel: 1 Mislukt om uit te voeren (CalculateField). Is er iets mis met de code !Count! * 30 * 30? Dank u, Erica

Hi Erica Price David is correct. This is an error in the lesson: For Arcade you should use: $feature [ "Count" ] * 30 * 30 // or $feature . Count * 30 * 30 You can also change it to Python and use the formula mentioned in the lesson: !Count! * 30 * 30

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Is er een bug in deze les?

EricaPrice

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Ik volg de les Voorspel overstromingen met unit hydrographs | Learn ArcGIS<\/A> en bij de sectie "Maak een Unit Hydrograph: Bereid de Unit Hydrograph-tabel voor," #13, krijg ik deze foutmelding: <\/P>

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FOUT 002717: Ongeldige Arcade-expressie, Arcade-fout: Puntkomma of nieuwe regel verwacht, Scriptregel: 1<\/P>

Mislukt om uit te voeren (CalculateField).<\/P>

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Is er iets mis met de code !Count! * 30 * 30? <\/P>

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Dank u,<\/P>

Erica<\/P><\/BODY><\/HTML>

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XanderBakker

Hi Erica Price

David is correct. This is an error in the lesson:

For Arcade you should use:

$feature<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"Count"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN>
<SPAN class="comment token">// or</SPAN>
$feature<SPAN class="punctuation token">.</SPAN>Count <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

You can also change it to Python and use the formula mentioned in the lesson:

!Count! <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

All comments

HeatherSmith

Thank you Erica, David, and Xander. We will make this fix for our next lesson release!

XanderBakker

Hi Erica Price

David is correct. This is an error in the lesson:

For Arcade you should use:

$feature<SPAN class="punctuation token">[</SPAN><SPAN class="string token">"Count"</SPAN><SPAN class="punctuation token">]</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN>
<SPAN class="comment token">// or</SPAN>
$feature<SPAN class="punctuation token">.</SPAN>Count <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

You can also change it to Python and use the formula mentioned in the lesson:

!Count! <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN> <SPAN class="operator token">*</SPAN> <SPAN class="number token">30</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

DavidPike

Looks like Python Field Calculator syntax?

I don't use Arcade unfortunately, but the documentation suggests a syntax like:

$feature["fieldname"] * 30 * 30

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