Error in if/while (condition) {: missing Value where TRUE/FALSE needed

The evaluation of condition resulted in an NA. The if conditional must have either a TRUE or FALSE result.

if (NA) {}
## Error in if (NA) { : missing value where TRUE/FALSE needed

This can happen accidentally as the results of calculations:

if(TRUE && sqrt(-1)) {}
## Error in if (TRUE && sqrt(-1)) { : missing value where TRUE/FALSE needed

To test whether an object is missing use is.na(x) rather than x == NA.

See also the related errors:

Error in if/while (condition) { : argument is of length zero

Error in if/while (condition) : argument is not interpretable as logical

if (NULL) {}
## Error in if (NULL) { : argument is of length zero

if ("not logical") {}
## Error: argument is not interpretable as logical

if (c(TRUE, FALSE)) {}
## Warning message:
## the condition has length > 1 and only the first element will be used

Related Posts:

  1. Emulate ggplot2 default color palette
  2. ggplot wrong color assignment
  3. How to rename a single column in a data.frame?
  4. t-stat for feature selection
  5. R Error in x$ed : $ operator is invalid for atomic vectors
  6. What does na.rm=TRUE actually means?
  7. How do I replace NA values with zeros in an R dataframe?
  8. How to change legend title in ggplot
  9. Changing column names of a data frame
  10. Error in do_one(nmeth) : NA/NaN/Inf in foreign function call (arg 1)
  11. R on MacOS Error: vector memory exhausted (limit reached?)
  12. Non-numeric Argument to Binary Operator Error in R
  13. Non-numeric Argument to Binary Operator Error in R
  14. R issue “object not found”
  15. Error in Confusion Matrix : the data and reference factors must have the same number of levels
  16. Why do I get “number of items to replace is not a multiple of replacement length”
  17. Error in file(file, “rt”) : invalid ‘description’ argument in complete.cases program
  18. Extracting value specific rows in R
  19. “Error: Mapping should be created with `aes()` or `aes_()`.”
  20. Error in file(file, “rt”) : invalid ‘description’ argument in complete.cases program
  21. Longer object length is not a multiple of shorter object length?
  22. plot.new has not been called yet
  23. Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, …) : NA/NaN/Inf in ‘y’, tried every possible way
  24. Logistic regression – eval(family$initialize) : y values must be 0 <= y <= 1
  25. Opposite of %in%: exclude rows with values specified in a vector
  26. Add text to ggplot
  27. Rotating and spacing axis labels in ggplot2
  28. Arcsine transformation of percentage data
  29. R loop that adds following numbers to each element in list
  30. Can I calculate z-score with R?
  31. Reading PSV (pipe-separated) file or string
  32. Function to clear the console in R and RStudio
  33. plot.new has not been called yet
  34. “replace” function examples
  35. R: need finite ‘ylim’ values in function
  36. Convert a list to a data frame
  37. Why I get this error writing data to a file
  38. Remove NA values from a vector
  39. Correlation between multiple variables of a data frame
  40. character string is not in a standard unambiguous format
  41. Remove rows with all or some NAs (missing values) in data.frame
  42. duplicate ‘row.names’ are not allowed error
  43. Function to clear the console in R and RStudio
  44. Adding a regression line on a ggplot
  45. Invalid factor level, NA generated warning
  46. R: “Unary operator error” from multiline ggplot2 command
  47. invalid type (list) for variable
  48. not a Stata version 5-12 .dta file
  49. Error: unexpected ‘}’ in “}” in R [duplicate]
  50. No non-missing arguments warning when using min or max in reshape2
  51. How to convert a factor to integer\numeric without loss of information?
  52. Having trouble setting working directory
  53. Understanding `scale` in R
  54. Add empty columns to a dataframe with specified names from a vector
  55. `fread` with headers with special characters (latin1) and unusual nested quotes
  56. file.path function in R
  57. Generate a set of random unique integers from an interval
  58. How to move or position a legend in ggplot2
  59. Rotating and spacing axis labels in ggplot2
  60. Plot multiple lines (data series) each with unique color in R
  61. Replace all particular values in a data frame
  62. Plot a legend outside of the plotting area in base graphics?
  63. Still getting error in dev.off() : cannot shut down device 1 (the null device)
  64. How to sum a variable by group
  65. lme4 error: boundary (singular) fit: see ?isSingular
  66. How to get summary statistics by group
  67. Non-conformable arrays error in code
  68. object of type ‘builtin’ is not subsettable
  69. Combine two data frames by rows (rbind) when they have different sets of columns
  70. Boxplot dplyr: Error: non-numeric argument to binary operator
  71. Function to calculate R2 (R-squared) in R
  72. `Error in file(con, “r”) : cannot open the connection` from running BRugsFit()
  73. Getting invalid model formula in ExtractVars when using rpart function in R
  74. Too few periods for decompose()
  75. Aggregate multiple columns at once
  76. How to solve prcomp.default(): cannot rescale a constant/zero column to unit variance
  77. How Do You Compare Two Strings in R?
  78. changing title in multiplot ggplot2 using grid.arrange
  79. How to split data into training/testing sets using sample function
  80. Correct syntax for mutate_if
  81. Creating a Plot Window of a Particular Size
  82. Error:attempt to apply non-function
  83. Error in xj[i] : invalid subscript type ‘list’
  84. How do you specifically order ggplot2 x axis instead of alphabetical order?
  85. Sample random rows in dataframe
  86. Error in eval(predvars, data, env) : object ‘Rm’ not found
  87. How to initialize a vector with fixed length in R
  88. Efficiently sum across multiple columns in R
  89. How do I clean up R memory without restarting my PC?
  90. Side-by-side plots with ggplot2
  91. lib unspecified & Error in loadNamespace
  92. How to convert data.frame column from Factor to numeric [duplicate]
  93. Merge data frames based on rownames in R
  94. What do these R glm error messages mean: “Error: no valid set of coefficients has been found: please supply starting values”
  95. Remove columns from dataframe where some of values are NA
  96. how to add dashed horizontal line with label in ggplot
  97. What is the meaning of the dollar sign “$” in R function()?
  98. Filter rows which contain a certain string
  99. How can I change the name of a data frame
  100. How to calculate combination and permutation in R?

Leave a Comment