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Deleting missing values from a dataset


How to execute JavaScipt on a webpage and then import the result on OSX?GeoLabels/Tooltips in Geographic Plots from DatasetImport a column of data, make a matrix from it and export it WITHOUT curly bracesShort way to query Dataset by the value of several columnsHow do I import a Dataset that contains lists?Going from Dataset back to underlying AssociationsElegant way to return first non-Missing column in DatasetHow to work with a Dataset?Best way to convert numerical columns of a dataset with missing values into a matrixWhat's the best way to import such dataset?













1












$begingroup$


I wanted to create a dataset of all UFO sightings in April of 2018. The
AssociationThread doesn't want to work, because some of the entries are missing value, what is the best way to fix it?



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"Data"];
dataA2 = Flatten[Rest@dataA1, 1];
dataA3 =
Map[AssociationThread[First[dataA1], #] &, dataA2]
Dataset[dataA3]









share|improve this question











$endgroup$







  • 1




    $begingroup$
    To be clear, this isn't about data that is Missing[], but rather Import[XXXX,"HTML", "Data"] giving "tables" that have rows with inconsistent lengths.
    $endgroup$
    – Carl Lange
    4 hours ago















1












$begingroup$


I wanted to create a dataset of all UFO sightings in April of 2018. The
AssociationThread doesn't want to work, because some of the entries are missing value, what is the best way to fix it?



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"Data"];
dataA2 = Flatten[Rest@dataA1, 1];
dataA3 =
Map[AssociationThread[First[dataA1], #] &, dataA2]
Dataset[dataA3]









share|improve this question











$endgroup$







  • 1




    $begingroup$
    To be clear, this isn't about data that is Missing[], but rather Import[XXXX,"HTML", "Data"] giving "tables" that have rows with inconsistent lengths.
    $endgroup$
    – Carl Lange
    4 hours ago













1












1








1





$begingroup$


I wanted to create a dataset of all UFO sightings in April of 2018. The
AssociationThread doesn't want to work, because some of the entries are missing value, what is the best way to fix it?



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"Data"];
dataA2 = Flatten[Rest@dataA1, 1];
dataA3 =
Map[AssociationThread[First[dataA1], #] &, dataA2]
Dataset[dataA3]









share|improve this question











$endgroup$




I wanted to create a dataset of all UFO sightings in April of 2018. The
AssociationThread doesn't want to work, because some of the entries are missing value, what is the best way to fix it?



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"Data"];
dataA2 = Flatten[Rest@dataA1, 1];
dataA3 =
Map[AssociationThread[First[dataA1], #] &, dataA2]
Dataset[dataA3]






import dataset associations web-access






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 2 hours ago









Carl Lange

4,60311038




4,60311038










asked 4 hours ago









Artem AnisimovArtem Anisimov

353




353







  • 1




    $begingroup$
    To be clear, this isn't about data that is Missing[], but rather Import[XXXX,"HTML", "Data"] giving "tables" that have rows with inconsistent lengths.
    $endgroup$
    – Carl Lange
    4 hours ago












  • 1




    $begingroup$
    To be clear, this isn't about data that is Missing[], but rather Import[XXXX,"HTML", "Data"] giving "tables" that have rows with inconsistent lengths.
    $endgroup$
    – Carl Lange
    4 hours ago







1




1




$begingroup$
To be clear, this isn't about data that is Missing[], but rather Import[XXXX,"HTML", "Data"] giving "tables" that have rows with inconsistent lengths.
$endgroup$
– Carl Lange
4 hours ago




$begingroup$
To be clear, this isn't about data that is Missing[], but rather Import[XXXX,"HTML", "Data"] giving "tables" that have rows with inconsistent lengths.
$endgroup$
– Carl Lange
4 hours ago










1 Answer
1






active

oldest

votes


















5












$begingroup$

You can solve this by importing "FullData" rather than "Data".



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"FullData"]
dataA2 = Flatten[Most@Rest@dataA1[[8]], 1]
dataA3 = Map[AssociationThread[dataA1[[8, 1, 1]], #] &, dataA2];
Dataset[dataA3]


What's awkward about this is that there can be many empty tables that you must sift through (as you can see, I have to get the 8th element). However, it works quite well in this case.






share|improve this answer









$endgroup$












  • $begingroup$
    Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
    $endgroup$
    – Artem Anisimov
    3 hours ago






  • 2




    $begingroup$
    @ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
    $endgroup$
    – Carl Lange
    3 hours ago










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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









5












$begingroup$

You can solve this by importing "FullData" rather than "Data".



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"FullData"]
dataA2 = Flatten[Most@Rest@dataA1[[8]], 1]
dataA3 = Map[AssociationThread[dataA1[[8, 1, 1]], #] &, dataA2];
Dataset[dataA3]


What's awkward about this is that there can be many empty tables that you must sift through (as you can see, I have to get the 8th element). However, it works quite well in this case.






share|improve this answer









$endgroup$












  • $begingroup$
    Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
    $endgroup$
    – Artem Anisimov
    3 hours ago






  • 2




    $begingroup$
    @ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
    $endgroup$
    – Carl Lange
    3 hours ago















5












$begingroup$

You can solve this by importing "FullData" rather than "Data".



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"FullData"]
dataA2 = Flatten[Most@Rest@dataA1[[8]], 1]
dataA3 = Map[AssociationThread[dataA1[[8, 1, 1]], #] &, dataA2];
Dataset[dataA3]


What's awkward about this is that there can be many empty tables that you must sift through (as you can see, I have to get the 8th element). However, it works quite well in this case.






share|improve this answer









$endgroup$












  • $begingroup$
    Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
    $endgroup$
    – Artem Anisimov
    3 hours ago






  • 2




    $begingroup$
    @ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
    $endgroup$
    – Carl Lange
    3 hours ago













5












5








5





$begingroup$

You can solve this by importing "FullData" rather than "Data".



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"FullData"]
dataA2 = Flatten[Most@Rest@dataA1[[8]], 1]
dataA3 = Map[AssociationThread[dataA1[[8, 1, 1]], #] &, dataA2];
Dataset[dataA3]


What's awkward about this is that there can be many empty tables that you must sift through (as you can see, I have to get the 8th element). However, it works quite well in this case.






share|improve this answer









$endgroup$



You can solve this by importing "FullData" rather than "Data".



dataA1 = Import[
"http://www.nuforc.org/webreports/ndxe201804.html", "HTML",
"FullData"]
dataA2 = Flatten[Most@Rest@dataA1[[8]], 1]
dataA3 = Map[AssociationThread[dataA1[[8, 1, 1]], #] &, dataA2];
Dataset[dataA3]


What's awkward about this is that there can be many empty tables that you must sift through (as you can see, I have to get the 8th element). However, it works quite well in this case.







share|improve this answer












share|improve this answer



share|improve this answer










answered 4 hours ago









Carl LangeCarl Lange

4,60311038




4,60311038











  • $begingroup$
    Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
    $endgroup$
    – Artem Anisimov
    3 hours ago






  • 2




    $begingroup$
    @ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
    $endgroup$
    – Carl Lange
    3 hours ago
















  • $begingroup$
    Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
    $endgroup$
    – Artem Anisimov
    3 hours ago






  • 2




    $begingroup$
    @ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
    $endgroup$
    – Carl Lange
    3 hours ago















$begingroup$
Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
$endgroup$
– Artem Anisimov
3 hours ago




$begingroup$
Thank you, but I'm not completely sure how "Data" and "FullData" differ. Why do they exist separately?
$endgroup$
– Artem Anisimov
3 hours ago




2




2




$begingroup$
@ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
$endgroup$
– Carl Lange
3 hours ago




$begingroup$
@ArtemAnisimov From the documentation for the "HTML" import/export format: "FullData" imports: "full tabular content, including empty HTML table and list elements". "Data" doesn't import empty elements.
$endgroup$
– Carl Lange
3 hours ago

















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