Description Usage Arguments Details Examples
Printed output summarizing the results of ca
, including a scree-plot of the principal inertias and row and column contributions.
1 2 |
object |
Simple correspondence analysis object returned by |
scree |
Logical flag specifying if a scree-plot should be included in the output. |
rows |
Logical: should row contribution summaries be included? |
columns |
Logical: should column contribution summaries be included? |
... |
Further arguments (ignored) |
The function summary.ca
gives the detailed numerical results of the ca
function. All the eigenvalues (principal inertias) are listed, their percentages with respect to total inertia, and a bar chart (also known as a scree plot). Then for the set of rows and columns a table of results is given in a standard format, where quantities are either multiplied by 1000 or expressed in permills (thousandths): the mass of each point (x1000), the quality of display in the solution subspace of nd
dimensions, the inertia of the point (in permills of the total inertia), and then for each dimension of the solution the principal coordinate (x1000), the (relative) contribution COR of the principal axis to the point inertia (x1000) and the (absolute) contribution CTR of the point to the inertia of the axis (in permills of the principal inertia).
For supplementary points, masses, inertias and absolute contributions (CTR) are not applicable, but the relative contributions (COR) are valid as well as their sum over the set of chosen nd
dimensions (QLT).
1 2 |
Principal inertias (eigenvalues):
dim value % cum% scree plot
1 0.074759 87.8 87.8 **********************
2 0.010017 11.8 99.5 ***
3 0.000414 0.5 100.0
-------- -----
Total: 0.085190 100.0
Rows:
name mass qlt inr k=1 cor ctr k=2 cor ctr
1 | SM | 57 893 31 | -66 92 3 | -194 800 214 |
2 | JM | 93 991 139 | 259 526 84 | -243 465 551 |
3 | SE | 264 1000 450 | -381 999 512 | -11 1 3 |
4 | JE | 456 1000 308 | 233 942 331 | 58 58 152 |
5 | SC | 130 999 71 | -201 865 70 | 79 133 81 |
Columns:
name mass qlt inr k=1 cor ctr k=2 cor ctr
1 | none | 316 1000 577 | -393 994 654 | -30 6 29 |
2 | lght | 233 984 83 | 99 327 31 | 141 657 463 |
3 | medm | 321 983 148 | 196 982 166 | 7 1 2 |
4 | hevy | 130 995 192 | 294 684 150 | -198 310 506 |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.