Deleting missing values from a datasetHow to execute JavaScipt on a webpage and then import the result on...

Can't remove a file with file mode bits a+rw

When two POV characters meet

How is the Swiss post e-voting system supposed to work, and how was it wrong?

Am I not good enough for you?

Should we release the security issues we found in our product as CVE or we can just update those on weekly release notes?

Is all copper pipe pretty much the same?

It's a yearly task, alright

Why doesn't the EU now just force the UK to choose between referendum and no-deal?

What wound would be of little consequence to a biped but terrible for a quadruped?

Single word request: Harming the benefactor

What is the likely impact on flights of grounding an entire aircraft series?

Unreachable code, but reachable with exception

Good allowance savings plan?

How to make readers know that my work has used a hidden constraint?

Time travel short story where dinosaur doesn't taste like chicken

Making a sword in the stone, in a medieval world without magic

validation vs test vs training accuracy, which one to compare for claiming overfit?

Word for a person who has no opinion about whether god exists

Playing ONE triplet (not three)

Potentiometer like component

This equation is outside the page, how to modify it

Can the druid cantrip Thorn Whip really defeat a water weird this easily?

How could our ancestors have domesticated a solitary predator?

Replacing Windows 7 security updates with anti-virus?



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
    2 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
    2 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 16 mins ago









Carl Lange

4,58311038




4,58311038










asked 2 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
    2 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
    2 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
2 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
2 hours ago










1 Answer
1






active

oldest

votes


















4












$begingroup$

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
    1 hour ago






  • 1




    $begingroup$
    @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
    32 mins ago











Your Answer





StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "387"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmathematica.stackexchange.com%2fquestions%2f193199%2fdeleting-missing-values-from-a-dataset%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









4












$begingroup$

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
    1 hour ago






  • 1




    $begingroup$
    @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
    32 mins ago
















4












$begingroup$

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
    1 hour ago






  • 1




    $begingroup$
    @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
    32 mins ago














4












4








4





$begingroup$

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 1 hour ago









Carl LangeCarl Lange

4,58311038




4,58311038












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






  • 1




    $begingroup$
    @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
    32 mins ago


















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






  • 1




    $begingroup$
    @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
    32 mins ago
















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




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




1




1




$begingroup$
@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
32 mins 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
32 mins ago


















draft saved

draft discarded




















































Thanks for contributing an answer to Mathematica Stack Exchange!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


Use MathJax to format equations. MathJax reference.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmathematica.stackexchange.com%2fquestions%2f193199%2fdeleting-missing-values-from-a-dataset%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Installing LyX: “No textclass is found.”LyX installation error- text class not found- 'Reconfigure' or...

(1602) Indiana Índice Designación y nombre Características orbitales Véase...

Universidad Autónoma de Occidente Índice Historia Campus Facultades Programas Académicos Medios de...