Questions tagged [error-message]

Refers to errors generated by a computer program or a statistical package. Make sure your question is related to STATISTICS, MACHINE LEARNING, or DATA ANALYSIS and is not solely about programming, support, or bugs. Include additional tags referring to the statistical issues involved.

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Trying to compute factor scores from second-order EFA analysis - non-conformable arrays error

I'm stuck at the last point of my analysis where I am trying to compute factor scores from my factor analysis. I get the following error, but I've checked that the number of rows/cols of the matrix ...
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0answers
63 views

Backtesting GARCH model [closed]

Hi I am wondering wether the tgarch model is better for predicting volatility than regular garch I built a garch model in R and im trying to predict future 1 day volatility of this equity I am ...
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1answer
268 views

statsmodels ARIMA predict function on in sample data points [closed]

I'm trying to use the ARIMA predict function to predict on any test sample--this could include both in sample and out of sample data points, however the frequency will be fixed and equal to the ...
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1answer
31 views

How to generate a VAR(1) model? [closed]

I already written the code but something went wrong and I don't know why... here is the code. ...
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1answer
2k views

Error while fitting data in auto.arima - R

I am running auto.arima for forecasting time series data and getting the following error: ...
1
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1answer
269 views

auto.arima throws error wrong length for 'fixed' [closed]

I am using auto.arima from the R forecast package. When using this function with lambda parameter, it is throwing error wrong length for 'fixed' Here is the code ...
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1answer
442 views

What post-hoc analysis should I use following a two-way ANCOVA with factor, integer and numeric variables?

I ran a two-way ANCOVA on the data below, in r-studio, to determine whether pupal weights Pupal.wt were affected by caterpillars' diet ...
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0answers
467 views

Mixed effect logistic regression error: Model failed to converge with max|grad| = 0.0230258 (tol = 0.001, component 1)

Update on the study design and data: I am testing whether increased temperatures will affect dung burial by dung beetles. The beetle species that I have used makes balls of dung and buries each dung ...
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2answers
1k views

Error in Johansen procedure `ca.jo` in R: “system is computationally singular”

I am trying to model some data for a VECM in R. I have confirmed that all the variables are I(1), and I have 73 observations for each variable. My understanding is that to check for cointegration, you ...
2
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1answer
1k views

How to test whether covariates are significant with “xreg=” and “auto.arima()” (Error message)

I have 10 separate time series with one response variable (#users) and 4 predictor (dummy) variables (discount, feature_update, non_feature_update, bugfix). One exemplary time series looks like this: ...
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2answers
102 views

R logistic regression [closed]

I was using the Smarket data in the ISLR package for logistic regression (in R) and find the error below. If I use the following command, I get the error (warning): ...
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1answer
934 views

Error in ARIMA function in R [closed]

I am analyzing time series data with 'Arima' function in R. As you know, to find optimum model, I have tried lots of cases. But, I am tired of finding and ...
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0answers
3k views

lme (nlme) error: “system is computationally singular”

I am starting a mixed-model selection analysis with lme in R. But when I start to fit the full model: ...
0
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1answer
459 views

Error when fitting ARIMA model in R [closed]

I am trying to fit ARIMA model on a monthly data. I checked for stationarity, it was not stationarity so I tried to difference, but this is the error message I got: ...
1
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1answer
3k views

Error in Math.data.frame…non-numeric variable in data frame [closed]

I have been trying to get some descriptive information from my dataset using R. The following code gives me error: ...
4
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1answer
1k views

Mixed effects model error message: Model is nearly unidentifiable: large eigenvalue ratio

I am fitting a mixed effects model with a binary outcome. I have one fixed effect (Offset, a 3 level factor) and one random effect (chamber, with multiple data ...
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0answers
2k views

“non-finite finite-difference value” error in SARIMA models

I am trying to fit different SARIMA models in R. I first tried to fit on the first 12 data points, I got an error; I thought seasonal differencing requires more data, so I changed it to first 24 data ...
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1answer
438 views

Exogenous regressors using PCA: variable lengths differ in auto.arima

Following the post here, I came with another issue that is related to another topic. I am using PCA to use K number of principal components as exogenous regressors to use in an auto.arima model in R. ...
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2answers
2k views

Add categorical variable in crr of package cmprsk

My magelastbirth_pctl is a categorical variable with 5 levels. I want to calculate the hazard ratio of the 4 last categories compared to the first categories using Fine and Gray competing risk model. ...
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0answers
639 views

GARCH with Student errors produces an error message in R (but GARCH with normal errors runs fine)

I am estimating the volatility of exchange rate returns using GARCH(1,1) with the following code: m1 = garchFit(~1+garch(1,1), data = EUR_SEK, trace = F) As soon ...
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2answers
493 views
4
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4answers
10k views

Trouble in fitting data to a curve (NLS)

I got a time series dataset from the lab and would like to fit my data to a curve (using R package): $$ P_{1}(t)=y_{0}-a_{1}e^{-b_{1}t}-a_{2}e^{-b_{2}t}, b_{2}>b_{1} \tag{A} $$ I plotted the ...
2
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1answer
498 views

No fitted ARIMA model

I wanted to fit an ARIMA model to a daily database for three years but auto.arima couldn't find a model and showed the following error: ...
2
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1answer
1k views

Using GP_fit() of GPfit package in R [closed]

I am trying to work with Gaussian process through GPfit package of R but every time I use GP_fit() of this package, either it ...
0
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1answer
2k views

Tukey for GLM can't find data in model

I fit a GLM to a dataset. Now I want to see where the difference between my groups is, so I tried to run a Tukey HSD as a post-hoc test. Because of it is a GLM, I can't use ...
7
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1answer
401 views

Nonlinear regression

I have some functions of $x$, in the form of $d\sqrt{x}$ or $d\log(x)$ where $d$ is known. I would like to rewrite (approximate is fine) them in the form $a/(1 + bx^c)$, where $a$, $b$ and $c$ are ...
1
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0answers
453 views

Error message with robust regression in R

Whenever I run a robust regression model in R with rlm and with either M or MM methods, I get the following error message: Error: 'lqs' failed: all the samples ...
1
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0answers
372 views

Lme4 Error Help: “maxstephalfit…pwrssUpdate”

I am using a mixed model to assess the effects of various treatments on bee behavior (e.g., avoidance frequency - total avoidances per total visits; feeding frequency, and mating frequency). Bee ...
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0answers
2k views

Caret with rxDForest as custom model

I'm trying to use the train function from the caret package to tune the parameters of the rxDForest from RevoScaleR package (I ...
6
votes
2answers
4k views

Warning message in auto.arima

I am using auto.arima() for prediction, and getting the following warning message. I want to know if I can ignore this warning message or if I should be worried. <...
2
votes
2answers
757 views

Joint trivariate normal density

I now introduce the problem: Let assume $\mathbf{z} = (z_1, z_2,z_3)$ be a trivariate normal variable. I want to find the covariance matrix of $\mathbf{z}$. I now that the density of $(z_1, z_2)$ is ...
3
votes
0answers
841 views

Outliers causing Heywood case in CFA using MLM estimator in lavaan

I am trying to perform a CFA on data (10 indicators: $n=300$) that is severely non-normal but continuous (counts of a clinical behavior over a period of weeks): many cases are at zero, a fair few ...
8
votes
1answer
16k views

Warning (in R): “ANOVA F-tests on an essentially perfect fit are unreliable”

I have the data: numbers <- c(0.176, 0.005, 0.022, 0.016, 0.036, 0.095, 0.069 ) Inds <- as.factor(c("P06", "P07", "P08", "P09", "P10", "P12", "P13") ) and ...
0
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0answers
81 views

IVEware warnings

When using SAS callable IVEware for multiple imputation it will occasionally throw out a warning for too many iterations. Can someone give me an idea of how many warnings are acceptable (if any) for ...
1
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0answers
54 views

Ecalp function on R

I am doing some model validation and calibration of training data fit to use with glm and gam models, and I am having a problem with the ecalp function. Does anyone had this problem before? Any ...
52
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6answers
85k views

Warning in R - Chi-squared approximation may be incorrect

I have data showing fire fighter entrance exam results. I am testing the hypothesis that exam results and ethnicity are not mutually independent. To test this, I ran a Pearson chi-square test in R. ...
4
votes
1answer
1k views

Unable to fit repeated measures in R

I've been trying to fit a repeated measures model in R using lmer but I get an error message. I've used SAS in the past and I was able to fit a somewhat similar ...
0
votes
1answer
3k views

Odds ratio with zero cell counts

I am trying to run a binomial GLM but have some zero cell counts resulting in estimates of +/- infinity. In the text book "An Introduction to Categorical Data Analysis" Agresti A. (1996) it suggests ...
4
votes
3answers
53k views

Logistic predict.glm() function error: factor has new levels

I fit a logistic on three numeric continuous variables, followed by a categorical factor [Y, N]. ...
4
votes
3answers
9k views

Using correlate in Stata to compare within a variable

I am trying to compare correlations between subgroups of a variable. For instance, I am trying to compare the income of group 1 v. income of group 2 v. income of group 3 v. income of group 4, where ...
1
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2answers
3k views

Compilation error in JAGS

With this data: ...
0
votes
0answers
3k views

rknn - Error: too many ties in knn

I am trying to run rknn with rknn package but it appears an error I am not able to understand. Here's the code and the error: ...
0
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1answer
1k views

“Array index is less than one” WINBUGS Error

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6
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1answer
2k views

Checking assumptions for random effects in nested mixed-effects models in R / S-Plus

I am modelling a nested mixed-effects model with just the intercept in the random part, of the form: ...