Description Usage Arguments Details Value Author(s) See Also Examples
This function provides easy visualization of the balance of data in a data set given a specified experimental design. This function is useful for identifying missing data and other issues (see examples).
1 2 3 4 5 6 7 8 |
data |
Data frame containing the data to be visualized. |
x |
Name of the variable to plot on the x-axis. |
y |
Name of the variable to plot on the y-axis. |
row |
Name of a variable by which to split the data into facet rows. |
col |
Name of a variable by which to split the data into facet columns. |
cell_border_size |
Numeric value specifying the size of the border seperating cells (0 specifies no border) |
The function works by counting the number of rows in data
in each cell of the design specified by the factorial combination of x
, y
, row
, col
variables.
A printable/modifiable ggplot2 object.
Michael A. Lawrence mike.lwrnc@gmail.com
Visit the ez
development site at http://github.com/mike-lawrence/ez
for the bug/issue tracker and the link to the mailing list.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | #Read in the ANT2 data (see ?ANT2).
data(ANT2)
head(ANT2)
ezPrecis(ANT2)
#toss NA trials
ANT2 = ANT2[!is.na(ANT2$rt),]
ezDesign(
data = ANT2
, x = trial
, y = subnum
, row = block
, col = group
)
#subnum #7 is missing data from the last half of the experiment
## Not run:
ezDesign(
data = ANT2
, x = flank
, y = subnum
, row = cue
)
#again, subnum#7 has half the data as the rest
#now look at error rates, which affect the number of RTs we can use
ezDesign(
data = ANT2[ANT2$error==0,]
, x = flank
, y = subnum
, row = cue
)
#again, subnum#7 stands out because they have half the data as the rest
#also, subnum#14 has no data in any incongruent cells, suggesting that
##they made all errors in this condition
#finally, subnum#12 has virtually no data, suggesting that they mistakenly
##swapped responses
## End(Not run)
|
subnum group block trial cue flank location direction rt
1 1 Treatment 1 1 None Neutral up left 398.6773
2 1 Treatment 1 2 Center Neutral up left 389.1822
3 1 Treatment 1 3 Double Neutral up left 333.2186
4 1 Treatment 1 4 Spatial Neutral up left 419.7640
5 1 Treatment 1 5 None Congruent up left 446.4754
6 1 Treatment 1 6 Center Congruent up left 338.9766
error
1 0
2 0
3 0
4 0
5 0
6 0
Data frame dimensions: 5760 rows, 10 columns
type missing values min max
subnum numeric 0 20 1 20
group factor 0 2 Control Treatment
block numeric 0 6 1 6
trial factor 0 48 1 48
cue factor 0 4 None Spatial
flank factor 0 3 Neutral Incongruent
location factor 0 2 down up
direction factor 0 2 left right
rt numeric 144 5617 179.5972 657.6986
error numeric 144 3 0 1
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