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Shpewrite error using Matlab example

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Tim
Tim 2019-7-19
编辑： Tim 2019-7-22
EDIT: Resolved- duplicate function names, I had thought Matlab would use its own first...
When i try to use shapewrite, by following the example, i get the following error;
>> shapewrite(S, 'main_concord_roads.shp')
Error using shapewrite (line 83)
Unknown shape identification: main_concord_roads.shp
I've happily read a file in and want to ammend that before wiring it out, but its not happy? ANysuggestions?
Using R2017b.
Cheers, Tim

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回答（1 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2019-7-19
编辑：KALYAN ACHARJYA 2019-7-19
May be your code is partial, have you defined S before it is used? If yes, you have to share the complete code, so that people can try on it.
Try this way as example detail
shapeinfo('concord_roads');
S = shaperead('concord_roads','Selector',{@(roadclass) roadclass < 4, 'CLASS'});
shapewrite(S,'main_concord_roads.shp')
This is Mathworks documentation example.
  2 个评论
Tim
Tim 2019-7-19
Hi thanks for the response, alas i am following the example- as you ahve also provided, and the error remains;
>> shapeinfo('concord_roads');
S = shaperead('concord_roads','Selector',{@(roadclass) roadclass < 4, 'CLASS'});
shapewrite(S,'main_concord_roads.shp')
Error using shapewrite (line 83)
Unknown shape identification: main_concord_roads.shp
Tim
Tim 2019-7-19
I would imagine since i can use shaperead that i have the right toolboxes. Maybe i need to install a new version of Matlab. Seems odd!

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