Structural Equation and Twin Modeling in R


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Documentation for package ‘umx’ version 2.10.0

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D E F G I L N P Q R S T U V X

umx-package Functions for Structural Equation Modeling in OpenMx

-- D --

dl_from_dropbox dl_from_dropbox

-- E --

extractAIC.MxModel Extract AIC from MxModel

-- F --

Fischbein_wt Weight data across time.

-- G --

GFF Twin data: General Family Functioning, divorce, and well-being.

-- I --

install.OpenMx Install OpenMx, with choice of builds
iqdat Twin data: IQ measured longitudinally

-- L --

loadings loadings Generic loadings function to extract factor loadings from exploratory or confirmatory factor analyses.
loadings.MxModel Extract factor loadings from an EFA (factor analysis).

-- N --

namez umx_names

-- P --

parameters Display path estimates from a model, filtering by name and value.
plot Create and display a graphical path diagram for a model.
plot.MxLISRELModel Create and display a graphical path diagram for a LISREL model.
plot.MxModel Create and display a graphical path diagram for a model.
plot.MxModelACE umxPlotACE
plot.MxModelACEcov Make a graphical display of an ACE model with covariates.
plot.MxModelACEv Produce a graphical display of an ACE variance-components twin model
plot.MxModelCP Draw and display a graphical figure of Common Pathway model
plot.MxModelGxE Plot the results of a GxE univariate test for moderation of ACE components.
plot.MxModelGxEbiv Plot the results of a GxE univariate test for moderation of ACE components.
plot.MxModelIP Draw a graphical figure for a Independent Pathway model
plot.MxModelSimplex Draw and display a graphical figure of a simplex model

-- Q --

qm qm

-- R --

reliability reliability
residuals.MxModel Get residuals from an MxModel
RMSEA Generic RMSEA function
RMSEA.MxModel RMSEA function for MxModels
RMSEA.summary.mxmodel RMSEA function for MxModels

-- S --

summaryAPA Creates nicely formatted journal style summaries of lm models, p-values, data-frames etc.

-- T --

tmx_genotypic_effect Graphical display of genotypic effects.
tmx_is.identified Test if a factor model is identified
tmx_show Show matrices of RAM models in a easy-to-learn-from format.
tvars Concatenate base variable names with suffixes to create wide-format variable names (i.e twin-format)

-- U --

umx Functions for Structural Equation Modeling in OpenMx
umx-deprecated Deprecated. May already stop() code and ask to be updated. May be dropped entirely in future.
umx2ord umx_cont_2_quantiles
umxACE Build and run a 2-group Cholesky twin model (uni-variate or multi-variate)
umxACEcov Run a Cholesky with covariates, either fixed (def var in the means) or random (in the expected covariance matrix)
umxACEold Build and run a 2-group Cholesky twin model (uni-variate or multi-variate)
umxACEv Build and run 2-group uni- or multi-variate ACE models based on VARIANCE (not paths).
umxACE_cov_fixed Run a Cholesky with covariates ("fixed" / definition variables in the means style)
umxAdd1 umxAdd1
umxAlgebra A simple wrapper for mxAlgebra with name as the first parameter for more readable compact code.
umxAPA Creates nicely formatted journal style summaries of lm models, p-values, data-frames etc.
umxBrownie A recipe Easter-egg for umx
umxCI Add (and, optionally, run) confidence intervals to a structural model.
umxCI_boot umxCI_boot
umxCompare Print a comparison table of one or more 'mxModel's, formatted nicely.
umxConfint Get confidence intervals from a umx model
umxCov2cor Convert a covariance matrix into a correlation matrix
umxCovData Convert a dataframe into a cov mxData object
umxCP umxCP: Build and run a Common pathway twin model
umxCPold umxCPold: Build and run a Common pathway twin model
umxDescribeDataWLS Determine whether a dataset will have weights and summary statistics for the means if used with mxFitFunctionWLS
umxDiagnose Diagnose problems in a model - this is a work in progress.
umxDrop1 umxDrop1: Unfinished function to mimic drop1 in OpenMx
umxEFA FIML-based Exploratory Factor Analysis (EFA)
umxEquate umxEquate: Equate two or more paths
umxEval umxEval
umxExampleCode_TRHGpaper Example code from Twin Research and Human Genetics Paper on umx
umxExamples Example code from Twin Research and Human Genetics Paper on umx
umxExpCov Get the expected vcov matrix
umxExpMeans Extract the expected means matrix from an 'mxModel'
umxFactanal FIML-based Exploratory Factor Analysis (EFA)
umxFactor umxFactor
umxFactorScores Return factor scores from a model as an easily consumable dataframe.
umxFitIndices Get additional fit-indices for a model with umxFitIndices
umxFixAll umxFixAll: Fix all free parameters
umxGetParameters Get parameters from a model, with support for pattern matching!
umxGxE umxGxE: Implements ACE models with moderation of paths, e.g. by SES.
umxGxEbiv Bivariate GxE models where twins differ on the moderator.
umxGxE_window Implement the moving-window form of GxE analysis.
umxHetCor Create a matrix of correlations for variables of diverse types (binary, ordinal, continuous)
umxIP umxIP: Build and run an Independent pathway twin model
umxIPold umxIPold: Build and run an Independent pathway twin model
umxJiggle umxJiggle
umxLabel umxLabel: Add labels to a RAM model, matrix, or path
umxLatent umxLatent: Helper to ease making formative and reflective latent variables
umxLav2RAM Convert a lavaan syntax string to a umxRAM model
umxMatrix Make a mxMatrix with automatic labels. Also takes name as the first parameter for more readable code.
umxMI Report modifications which would improve fit.
umxModel Catches users typing umxModel instead of umxRAM.
umxModify umxModify: Add, set, or drop model paths by label.
umxPadAndPruneForDefVars umxPadAndPruneForDefVars
umxParameters Display path estimates from a model, filtering by name and value.
umxPath Easier (and powerful) specification of paths in SEM.
umxPlot Create and display a graphical path diagram for a model.
umxPlotACE umxPlotACE
umxPlotACEcov Make a graphical display of an ACE model with covariates.
umxPlotACEv Produce a graphical display of an ACE variance-components twin model
umxPlotCP Draw and display a graphical figure of Common Pathway model
umxPlotCPold Draw and display a graphical figure of Common Pathway model
umxPlotGxE Plot the results of a GxE univariate test for moderation of ACE components.
umxPlotGxEbiv Plot the results of a GxE univariate test for moderation of ACE components.
umxPlotIP Draw a graphical figure for a Independent Pathway model
umxPlotSexLim Draw and display a graphical figure of a Sex limitation model
umxPlotSimplex Draw and display a graphical figure of a simplex model
umxRAM Easier path-based SEM modeling.
umxRAM2 Make RAM model using lavaan syntax
umxRAM2Ordinal umxRAM2Ordinal
umxReduce Reduce models, and report the results.
umxReduceACE Reduce an ACE model.
umxReduceGxE Reduce a GxE model.
umxRun umxRun: Run an mxModel
umxSetParameters umxSetParameters: Set parameters in an mxModel
umxSexLim Multivariate sex limitation twin model
umxSimplex Build and run a simplex twin model (not ready for use!)
umxSummarizeTwinData Summarize twin data
umxSummary Shows a compact, publication-style, summary of umx models
umxSummary.MxModel Shows a compact, publication-style, summary of a RAM model
umxSummary.MxModelACE Shows a compact, publication-style, summary of a umx Cholesky ACE model
umxSummary.MxModelACEcov Present results of a twin ACE-model with covariates in table and graphical forms.
umxSummary.MxModelACEv Shows a compact, publication-style, summary of a variance-based Cholesky ACE model.
umxSummary.MxModelCP Present the results of a Common-pathway twin model in table and graphical form
umxSummary.MxModelGxE umxSummaryGxE
umxSummary.MxModelGxEbiv Summarize a bivariate GxE twin model
umxSummary.MxModelIP Present the results of an independent-pathway twin model in table and graphical form
umxSummary.MxModelSexLim Shows a compact, publication-style, summary of a umx Sex Limitation model
umxSummary.MxModelSimplex Shows a compact, publication-style, summary of a Simplex model.
umxSummaryACE Shows a compact, publication-style, summary of a umx Cholesky ACE model
umxSummaryACEcov Present results of a twin ACE-model with covariates in table and graphical forms.
umxSummaryACEv Shows a compact, publication-style, summary of a variance-based Cholesky ACE model.
umxSummaryCP Present the results of a Common-pathway twin model in table and graphical form
umxSummaryGxE umxSummaryGxE
umxSummaryGxEbiv Summarize a bivariate GxE twin model
umxSummaryIP Present the results of an independent-pathway twin model in table and graphical form
umxSummarySexLim Shows a compact, publication-style, summary of a umx Sex Limitation model
umxSummarySimplex Shows a compact, publication-style, summary of a Simplex model.
umxSuperModel Make a multi-group model
umxThresholdMatrix Create the threshold matrix needed for modeling ordinal data.
umxTwoStage umxTwoStage
umxUnexplainedCausalNexus umxUnexplainedCausalNexus
umxValues umxValues: Set values in RAM model, matrix, or path
umxVersion Get or print the version of umx, along with detail from OpenMx and general system info.
umxWeightedAIC AIC weight-based conditional probabilities.
umx_aggregate Convenient formula-based cross-tabs & built-in summary functions
umx_APA_pval Round p-values according to APA guidelines
umx_apply umx_apply
umx_array_shift Like the php array_shift function: shifts an item off the beginning of a list
umx_as_numeric umx_as_numeric
umx_cell_is_on Return whether a cell is in a set location of a matrix
umx_check umx_check
umx_checkpoint umx_set_checkpoint
umx_check_model Check for required features in an OpenMx.
umx_check_names umx_check_names
umx_check_OS umx_check_OS
umx_check_parallel Check if OpenMx is using OpenMP, test cores, and get timings
umx_cont_2_quantiles umx_cont_2_quantiles
umx_cor Report correlations and their p-values
umx_cov2raw Turn a cov matrix into raw data with umx_cov2raw
umx_default_option Select first item in list of options, while being flexible about choices.
umx_dot_define_shapes Helper to make the list of vars and their shapes for a graphviz string
umx_dot_mat2dot Return dot code for paths in a matrix
umx_dot_rank Helper to make a graphviz rank string
umx_drop_ok umx_drop_ok
umx_explode umx_explode - like the php function 'explode'
umx_explode_twin_names Break twin variable names (BMI_T1, BMI_T2) into base variable names (BMI, "_T", 1:2)
umx_factor umxFactor
umx_find_object umx_find_object
umx_fix_first_loadings umx_fix_first_loadings
umx_fix_latents umx_fix_latents
umx_fun_mean_sd umx_fun
umx_get_bracket_addresses Get mat[r,c] style cell address from an mxMatrix
umx_get_checkpoint umx_get_checkpoint
umx_get_options umx_get_options
umx_grep umx_grep
umx_has_been_run umx_has_been_run
umx_has_CIs umx_has_CIs
umx_has_means umx_has_means
umx_has_square_brackets Check if a label contains square brackets
umx_is_class Check if variables in a dataframe are in a list of classes.
umx_is_cov umx_is_cov
umx_is_endogenous umx_is_endogenous
umx_is_exogenous umx_is_exogenous
umx_is_MxData Check if an object is an mxData object
umx_is_MxMatrix umx_is_MxMatrix
umx_is_MxModel umx_is_MxModel
umx_is_numeric Check if variables in a dataframe are numeric
umx_is_ordered Test if one or more variables in a dataframe are ordered
umx_is_RAM umx_is_RAM
umx_long2wide Take a long twin-data file and make it wide (one family per row)
umx_lower2full Convert lower-only matrix data to full (or enforce symmetry on a full matrix)
umx_make "make" the umx package using devtools: release to CRAN etc.
umx_make_bin_cont_pair_data Make pairs of bin & continuous columns to represent censored data
umx_make_fake_data umx_make_fake_data
umx_make_MR_data Simulate Mendelian Randomization data
umx_make_sql_from_excel Convert an excel spreadsheet in a text file on sql statements.
umx_make_TwinData Simulate twin data with control over A, C, and E parameters, as well as moderation of A.
umx_match.arg Select first item in list of options, while being flexible about choices.
umx_means umx_means
umx_merge_CIs umx_merge_CIs
umx_move_file Move files
umx_msg Print the name and compact contents of variable.
umx_names umx_names
umx_object_as_str umx_object_as_str
umx_open umx_open
umx_open_CRAN_page Open the CRAN page for a package
umx_pad Pad an Object with NAs
umx_parameters Display path estimates from a model, filtering by name and value.
umx_paste_names Concatenate base variable names with suffixes to create wide-format variable names (i.e twin-format)
umx_pb_note umx_pb_note
umx_polychoric FIML-based polychoric, polyserial, and Pearson correlations
umx_polypairwise FIML-based Pairwise polychoric, polyserial, and Pearson correlations
umx_polytriowise FIML-based trio-based polychoric, polyserial, and Pearson correlations
umx_print Print tables in a range of formats (markdown default, see 'umx_set_table_format' for other formats) or as a web browser table.
umx_read_lower Read lower-triangle of data matrix from console or file
umx_rename umx_rename
umx_rename_file umx_rename_file
umx_reorder Reorder or drop variables from a correlation/covariance matrix.
umx_residualize Easily residualize variables in long or wide dataframes, returning them changed in-place.
umx_rot umx_rot
umx_round umx_round
umx_r_test Test the difference between correlations for significance.
umx_scale Scale data columns, skipping non-scalable columns
umx_scale_wide_twin_data umx_scale_wide_twin_data
umx_score_scale Score a psychometric scale by summing normal and reversed items
umx_set_auto_plot umx_set_auto_plot
umx_set_auto_run umx_set_auto_run
umx_set_checkpoint umx_set_checkpoint
umx_set_condensed_slots umx_set_condensed_slots
umx_set_cores umx_set_cores
umx_set_data_variance_check umx_set_data_variance_check
umx_set_optimization_options umx_set_optimization_options
umx_set_optimizer umx_set_optimizer
umx_set_plot_file_suffix Set output suffix used in umx plot (structural diagrams) files to disk
umx_set_plot_format Set output format of plots (structural diagrams) in umx
umx_set_table_format umx_set_table_format
umx_show_fit_or_comparison Show model logLik of model or print comparison table
umx_stack Stack data like stack() does, with more control.
umx_standardize Return a standardized version of a Structural Model
umx_standardize_ACE umx_standardize_ACE
umx_standardize_ACEcov umx_standardize_ACEcov
umx_standardize_ACEv Standardize an ACE variance components model (ACEv)
umx_standardize_CP umx_standardize_CP
umx_standardize_IP umx_standardize_IP
umx_standardize_RAM Return a standardized version of a Structural Model
umx_standardize_SexLim Standardize a SexLim model
umx_standardize_Simplex Standardize a Simplex twin model
umx_stash_CIs Stash the CI values of a model as strings in the values of the model
umx_string_to_algebra Convert a string to an OpenMx algebra
umx_swap_a_block umx_swap_a_block
umx_time umx_time
umx_trim Trim whitespace surrounding a string.
umx_update_OpenMx Install OpenMx, with choice of builds
umx_var Get variances from a df that might contain some non-numeric columns
umx_wide2long Change data family data from wide (2 twins per row) to long format.
umx_write_to_clipboard umx_write_to_clipboard
us_skinfold_data Anthropometric data on twins

-- V --

vcov.MxModel Get the expected vcov matrix

-- X --

xmuHasSquareBrackets xmuHasSquareBrackets
xmuLabel_Matrix xmuLabel_Matrix (not a user function)
xmuLabel_MATRIX_Model xmuLabel_MATRIX_Model (not a user function)
xmuLabel_RAM_Model xmuLabel_RAM_Model (not a user function)
xmuMakeDeviationThresholdsMatrices Make a deviation-based mxRAMObjective for ordinal models.
xmuMakeOneHeadedPathsFromPathList xmuMakeOneHeadedPathsFromPathList
xmuMakeTwoHeadedPathsFromPathList xmuMakeTwoHeadedPathsFromPathList
xmuMaxLevels xmuMaxLevels
xmuMI xmuMI
xmuMinLevels xmuMinLevels
xmuPropagateLabels xmuPropagateLabels (not a user function)
xmu_assemble_twin_supermodel Assemble top, MZ and DZ into a supermodel
xmu_check_levels_identical xmu_check_levels_identical
xmu_check_variance Check the minimum variance in data frame
xmu_clean_label Remove illegal characters from labels
xmu_dot_maker Internal umx function to help plotting graphviz
xmu_dot_make_paths xmu_dot_make_paths (not for end users)
xmu_dot_make_residuals xmu_dot_make_residuals (not for end users)
xmu_dot_move_ranks xmu_dot_move_ranks (not for end users)
xmu_dot_rank_str xmu_dot_rank_str (not for end users)
xmu_get_CI xmu_get_CI
xmu_lavaan_process_group lavaan parameter table rows to model
xmu_make_mxData Upgrade a dataframe to an mxData type.
xmu_make_top_twin Helper to make a basic top, MZ, and DZ model.
xmu_model_needs_means Check data to see if model needs means.
xmu_safe_run_summary Safely run and summarize a model
xmu_set_sep_from_suffix Just a helper to cope with deprecated suffix lying around.
xmu_simplex_corner Internal function to help building simplex models
xmu_starts Helper providing twin models with boilerplate means and variance start values
xmu_start_value_list Make start values
xmu_twin_check Check basic aspects of input for twin models.