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Questions tagged [missing]

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5 votes
2 answers
196 views

Using ReactionBalance on chemical entities with missing formula

I am currently working on a project (turns out: a bigger project, than originally thought...) with all hypothetically "thinkable" products for a reaction with two given educts. These educts ...
Armin Vollmer's user avatar
5 votes
1 answer
95 views

How to accomodate empty data set in ListPlot, ListLinePlot?

The simple case often arises where multiple data sets are generated, and one or more is empty. ListPlot and related functions fail to plot such multidata sets. The ...
István Zachar's user avatar
5 votes
2 answers
197 views

Fill a sequence containing missing values

Example data list = {Missing[], Missing[], 100., 200., Missing[], Missing[], 250., 210., Missing[]}; With downloaded data I often have the situation that there are ...
eldo's user avatar
  • 81.3k
0 votes
1 answer
60 views

Apply a function to a rectangular subgrid with missing values

Some example data: ...
eldo's user avatar
  • 81.3k
1 vote
1 answer
77 views

ListPointPlot3D syntax for missing data

I have to plot different families of data some of which might be empty. If the data happens to be empty I want to automatically preserve the ordering of the ...
Kvothe's user avatar
  • 4,591
3 votes
2 answers
113 views

Finding Missing Values in TimeSeries

With TimeSeries it is all too common to end up with something like this: ...
MMAUser's user avatar
  • 409
1 vote
1 answer
82 views

Show Gaps in Data for ListLinePlot3D

For some reason, showing gaps in data is easier with ListLinePlot than with the closely related ListLinePlot3D. For example, <...
Just Some Old Man's user avatar
1 vote
3 answers
190 views

How to Export ragged data to a spreadsheet with missing variables in a way that the Mean calculations in both Mathematica and the Spreadsheet match

This is a multi-dimensional question. It is both about the way Mathematica handles missing values AND the difference in how Mathematica and a spreadsheet separately handle missing values. I have an ...
Rogo's user avatar
  • 940
1 vote
0 answers
95 views

Full Information Maximum Likelihood - Under some other name in Mathematica

I have recently stumbled upon something called FIML - Full Information Maximum Likelihood. Apparently this methodology helps overcome missing variables provided the gaps are random. Searching the ...
Rogo's user avatar
  • 940
2 votes
0 answers
44 views

A natural work with Missing values

For statistical procedures, is there some simple setting to automatically skip the Missing values? (e.g. Options -> "SkipMissing") The naive ...
Slepecky Mamut's user avatar
1 vote
1 answer
54 views

Specifying the position of the bottom element in a matrix when the last few elements are missing

Suppose I have a matrix (nested list) with some missing elements in the bottom region: m={{1,5},{2,6},{3},{4}}; m//TableForm 1 5 2 6 3 4 As you see, ...
cheese.burger's user avatar
2 votes
0 answers
57 views

Need a generalization of NumericalMath`NSequenceLimit to incomplete data

NumericalMath`NSequenceLimit is a great tool to obtain an empirical estimate of the limit of a sequence whose exact behavior is unknown, just from a finite prefix ...
Vladimir Reshetnikov's user avatar
5 votes
1 answer
80 views

Missing["reason"]—can any reason be used?

Can any string be used as a "reason"? Or is there a specific list of acceptable reasons? For instance, Missing["refuse"] works as a missing? Is there any ...
Slepecky Mamut's user avatar
5 votes
1 answer
118 views

Applying a function on several columns of a dataset fails on Missing

Consider a dataset with missing values: ...
Whelp's user avatar
  • 1,725
1 vote
1 answer
72 views

Missing Value in ErrorListPlot

I have two lists (of data points and error_y) automatically defined for the usage in ErrorListPlots. Sometimes it happens due to the used data, that a list has only one element and then the standard ...
Lea's user avatar
  • 942
2 votes
1 answer
179 views

Replacing values in a dataset

Could someone explain why ...
Fortsaint's user avatar
  • 2,060
0 votes
1 answer
261 views

Plotting rescaled time series and temporal data

I am trying to use ListLinePlot to plot three "Components" of my TemporalData in Mathematica. The three components differ widely in the range of the data. So, I want to Rescale each component and plot....
Murali's user avatar
  • 131
4 votes
1 answer
83 views

Using TotalVariationFilter on dataset with missing data

TotalVariationFilter does not work on a dataset with missing data. Does anybody has a good idea to make it work? I don't know if first splitting the dataset into ...
Porty's user avatar
  • 347
1 vote
1 answer
83 views

Using two functions to plot one function

I want to plot the following function, where Uin is the variable (that has to be on the x-axis): ...
asd's user avatar
  • 143
2 votes
1 answer
87 views

Handling Missing values flexibly in Query (MissingBehavior problem)

There’s an inconsistency in how Missing values are imputed in Query, with ...
alancalvitti's user avatar
  • 15.2k
2 votes
0 answers
75 views

WolframAlpha robustness

I am experiencing return values of Missing[NotAvailable] from WolframAlpha[], about 10% of the time. For some reason, this seems ...
Aharon Naiman's user avatar
4 votes
1 answer
105 views

Subtracting Missing[] the old way

In previous versions of Mathematica Missing[]- Missing[] would output Missing[]- Missing[]. In the current version is outputs 0. Is there a way to get Mathematica to revert back to the old output? ...
Wintermute's user avatar
4 votes
2 answers
139 views

Creating dataset from list of ragged associations with defaults for missing keys

Given the ragged dataset in form of association of associations: ...
grandrew's user avatar
  • 550
1 vote
1 answer
314 views

replace missing values in table with timeseries

I've got my data from a SQL-query like: Select[date0 /. SQLDateTime -> DateObject, #[[1]] > DateObject[{2016, 1, 1, 0, 0, 0.`}] &]; A ...
Michiel van Mens's user avatar
5 votes
4 answers
729 views

Mean of a list of lists (vector) with missing values

I understand, from Calculating the mean of a list with NaN values, that one can preserve structured data with missing values, and still calculate a mean, using ...
FalafelPita's user avatar
3 votes
0 answers
47 views

Proliferating NaN value after function execution

Is there any way in Mathematica to define a NaN that proliferates after function execution without throwing errors? Consider the following example: ...
MaxJ's user avatar
  • 1,535
1 vote
0 answers
98 views

Why is this lattice data missing?

Is there a reason why LatticeData["FaceCenteredOrthorhombic", "Basis"] returns Missing["NotAvailable"] while ...
svavil's user avatar
  • 193
0 votes
1 answer
121 views

In the Wolfram Curated Data Is "Missing[NotApplicable]" Somehow Special?

I have a simple two dimensional table, but I can't seem to Select[], or Cases[] match the data when the second column is ...
Phil Neumiller's user avatar
7 votes
2 answers
296 views

Query or MapAt ragged associations or ignoring Missing values

Related to this question, can functions be mapped to named Keys in ragged lists of Associations? ...
alancalvitti's user avatar
  • 15.2k
3 votes
1 answer
95 views

Evaluating same expression twice gives two distinct answers. Problem with Dataset?

Bug present in 10.4.1 and fixed in 11.0.1 Consider the following Dataset: d = Dataset[<|1 -> Missing[], 2 -> 2.0|>] Now evaluate ...
ecoxlinux's user avatar
  • 979
4 votes
1 answer
150 views

Upvalues for Missing do not work with Dataset

Consider the following Dataset: d = Dataset[<| 1 -> Missing[], 2 -> 1.0, 3 -> 4.0 |>] And the following Upvalue for Missing: ...
ecoxlinux's user avatar
  • 979
4 votes
0 answers
38 views

Missing Completely at Random MCAR

Many other stats packages have tests for MCAR but Mathematica doesn't seem to. Have a I missed something? If not what would a simple implementation in MMA look like. (disclaimer I'm new to MCAR ...
Gordon Coale's user avatar
  • 2,341
3 votes
1 answer
76 views

Trouble with an open QueueingNetworkProcess: Missing Performance measures

I'm trying to create the following open network using Mathematica: First of all, I define the variables of this network, in this way: ...
Alvurion's user avatar
3 votes
0 answers
88 views

Map level inconsistencies with Missing values [closed]

Negative Level specs interact with Missing values, eg: ...
alancalvitti's user avatar
  • 15.2k
4 votes
1 answer
151 views

DeleteMissing doesn't match in Association tables

DeleteMissing doesn't work in Association tables: ...
alancalvitti's user avatar
  • 15.2k
1 vote
0 answers
160 views

ThermodynamicData missing [closed]

Yesterday I was using ThermodynamicData[] and all was fine, today I try to use it and I get: Missing[NotAvailable] Does ...
space_voyager's user avatar
1 vote
1 answer
250 views

Problem fitting when some data is missing

I have a problem fitting a function to data, where I only have the falling and rising edges of the data, with the peak having been capped and was wondering if you have some tips. The data should have ...
a20's user avatar
  • 912
9 votes
1 answer
211 views

Applying functions to irregularly distributed Keys in Association lists

This Q is related to this one, but now refer to the situation as irregularly distributed Keys in lists of Associations: ...
alancalvitti's user avatar
  • 15.2k
2 votes
2 answers
212 views

A Query using Select and Quiet fails but Select by itself works

This is closely related to the question here, the key difference is that here data is structured as nested Association rather than a flat list: ...
alancalvitti's user avatar
  • 15.2k
0 votes
1 answer
202 views

Dataset fails on StringMatchQ warning due to Missing value

Missing values are a pain mathematically and computationally in general not just in WL, but I think this problem is more related to Dataset handling of warnings: <...
alancalvitti's user avatar
  • 15.2k
14 votes
6 answers
5k views

How do you skip missing data values in a data file?

In scanning through a simple imported file of weather station data, some dates have missing data. What is a test to use to check whether a datum is valid? I tried ...
R. Peter DeLong's user avatar