Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [missing]

The tag has no usage guidance.

0
votes
0answers
31 views

Missing value analysis, an advanced work with missing data

Does Wolfram or any package contain procedures for statistical work with missing data? Not just something as "remove Missing and compute with remains" I am asking ...
1
vote
1answer
29 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 ...
2
votes
1answer
59 views

Replacing values in a dataset

Could someone explain why ...
0
votes
1answer
70 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....
4
votes
1answer
45 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 ...
1
vote
1answer
57 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): ...
2
votes
1answer
48 views

Handling Missing values flexibly in Query (MissingBehavior problem)

There’s an inconsistency in how Missing values are imputed in Query, with ...
2
votes
0answers
49 views

WolframAlpha robustness

I am experiencing return values of Missing[NotAvailable] from WolframAlpha[], about 10% of the time. For some reason, this seems ...
4
votes
1answer
84 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? ...
3
votes
2answers
72 views

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

Given the ragged dataset in form of association of associations: ...
1
vote
1answer
111 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 ...
5
votes
4answers
270 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 ...
3
votes
0answers
28 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: ...
1
vote
0answers
62 views

Why is this lattice data missing?

Is there a reason why LatticeData["FaceCenteredOrthorhombic", "Basis"] returns Missing["NotAvailable"] while ...
0
votes
1answer
82 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 ...
7
votes
2answers
221 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? ...
3
votes
1answer
87 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 ...
4
votes
1answer
131 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: ...
4
votes
0answers
33 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 ...
3
votes
1answer
46 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: ...
3
votes
0answers
82 views

Map level inconsistencies with Missing values [closed]

Negative Level specs interact with Missing values, eg: ...
4
votes
1answer
111 views

DeleteMissing doesn't match in Association tables

DeleteMissing doesn't work in Association tables: ...
1
vote
0answers
118 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 ...
1
vote
1answer
178 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 ...
9
votes
1answer
188 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: ...
2
votes
2answers
198 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: ...
0
votes
1answer
151 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: <...
14
votes
6answers
4k 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 ...