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Découvrir ArcGIS Pro 2.6 3e éd. - Erreur de l'exercice 3d

JeffreySchmidt1

Bonjour, <\/P>

Dans Découvrir ArcGIS Pro 2.6, Exercice 3D > Jointure spatiale des données, vous réalisez une jointure spatiale. Le nom de sortie à l'étape 3 est différent de celui de la figure à l'étape 4. Le nom à l'étape 8 ne correspond pas non plus. C'est la première fois que quelqu'un apprend à faire une jointure spatiale dans ce livre. C'est un scénario compliqué et largement utilisé en SIG. J'espérais une meilleure description et un meilleur schéma de ce qui se passe. J'espère que cela sera revu et corrigé. J'utilise l'édition Amazon Kindle de ce livre. <\/P>

Merci de votre attention.<\/P>

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Accepted answers

Craig Carpenter

Hi Jeremy,

Thanks for bringing this issue to our attention.

The output feature class name should be, “c2010_SpatialJoin”

The operation should use “Contains”

You make a good point that understanding join operations is a fundamental concept and I’ll make a note to include more background on this in the next edition, so it is as clear as possible.

I’ll send you a code for an updated e-book once we make these changes.

Thanks,

Craig

All comments

JeffreySchmidt1

I am further confused by the fact that in knox county we previously calculated 4 food deserts... LILAtracts sum up to 4. Population sums to 13,926. When applying the spatial join, using intersect, as described, we label knox county and the book image shows 6 for knox county. Makes sense as intersect will probably take anything that touches the boundary. But is it appropriate for this analysis and does the reader understand these differences? Population gets skewed quite a bit by this method. "Contains" provides the same values as the relate component of the exercise. I dont understand why 6 is the "correct" answer? Help!

Craig Carpenter

Hi Jeremy,

Thanks for bringing this issue to our attention.

The output feature class name should be, “c2010_SpatialJoin”

The operation should use “Contains”

You make a good point that understanding join operations is a fundamental concept and I’ll make a note to include more background on this in the next edition, so it is as clear as possible.

I’ll send you a code for an updated e-book once we make these changes.

Thanks,

Craig

Florian

Hello Craig_Carpenter,

Was the change made regarding the join operations?

Could it be possible to have a copy of the updated e-book?

Thanks

Craig Carpenter

Yep, it should be updated, but I recommend the newer edition Getting to Know ArcGIS Pro 2.8.

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