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Conhecendo o ArcGIS Pro 2.6 3ª ed. - Erro no Exercício 3d

JeffreySchmidt1

Olá, <\/P>

No livro Conhecendo o ArcGIS Pro 2.6, Exercício 3D > Spatially Join Data, você passa por um processo de criação de uma junção espacial. O nome do resultado no passo 3 é diferente da figura no passo 4. O nome do passo 8 também não corresponde. Esta é a primeira vez que alguém aprende a fazer uma junção espacial neste livro. É um cenário complicado e amplamente utilizado em GIS. Eu esperava uma descrição melhor e um diagrama mais claro do que está acontecendo. Espero que isso seja revisado e corrigido. Estou usando a edição Amazon Kindle deste livro. <\/P>

Obrigado por analisar.<\/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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