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--- correlation_table [2019/11/18 13:34]
127.0.0.1 external edit
+++ correlation_table [2023/02/13 16:20] (current)
daria [Overview]
@@ Line 1: / Line 1: @@
-====== Correlation table ======
+=======Correlation table=======
-A correlation table displays correlation coefficients for the selected parameters of a sentitivity or probabilistic analysis towards a selected number of outputs (at a specific time point).
+===== Overview =====
-The table is only available after a probabilistic simulation or a sensitivity analysis has been performed.
+[[Table|Tables]] allow simulation data to be presented in a tabular form. The correlation table is used after a sensitivity analysis to present correlation coefficients between model inputs and model outputs. The table is only available after a probabilistic simulation or a sensitivity analysis has been performed.
+For a correlation table, the following dimensions are available:
+  * **Outputs** - The outputs that have been selected for the table.
+  * **Time** - If any of the outputs is time dependent, then the time dimension allow you to select which time points to show data for. It is also possible to show the minimum/maximum value across the time vector and the time points for which the minimum or maximum occurs.
+  * **Indices** - For each dimension of the selected outputs, a dimension is available for the table data. These dimensions allow you to select all, or only a sub-set of the indices of an [[Index list|index list]].
+  * **Correlation type** - The coefficients to calculate.
+  * **Inputs** - Whether to include all inputs or only inputs that can influence the selected objects. This dimension can also include an R2 value.
+  * **Transformation** - How to transform the data before the coefficients are calculated (none, rank or log)
+{{:correlation_table.png?600}}
 ===== Creating a correlation table =====
@@ Line 27: / Line 38: @@
   * **Lowest** - Select to highlight the lowest value in each column.
   * **Condition** - Select to enter a condition. The condition is on the form x<sub>start</sub> < x < <sub>end</sub> and will be evaluated for each cell in the table. Cells who’s value fulfills the condition will be highlighted.
-  * **Correlation** - Select correlation model.
 ===== Editing a correlation table =====
@@ Line 33: / Line 43: @@
 To edit a correlation table either right-click the table in the [[Tables_window|tables window]] and select **Edit**, or double-click the table, or click the {{:Edit24.png|Edit}} button in the title bar.
-The table editor has two tabs:
+The table editor has the following tabs:
-==== Properties ====
+  * **Properties** - Allows to change displayed name and other properties.
+  * **Outputs** - Select which outputs to include in the table. The outputs should all have the same dimension.
-This screen let you edit properties such as name, that are common to all tables. Please see [[Editing_table_properties|editing table properties]] for more information.
+  * **Indices** - Depending on the dimension of the outputs that were selected, you can select which indices to include or to include all indices.
+  * **Time** - If the outputs are time dependent, this tab allows you to select which time points to display data for.
-==== Data ====
+    * **Specific** - Select either all time points or specific time points to include
+    * **First** - Display the first time point
-This page lets you choose which outputs to include in the table.
+    * **Last** - Display the last time point
+    * **Max over time** - Display the maximum value for each output over time
-**Rows**
+    * **Time for max** - Display the time point for the maximum value for each output
+    * **Min over time** - Display the minimum value for each output over time
-  * **Title** – Enter a name for the first column. The default name is Input, but you are free to enter any text here.
+    * **Time for min** - Display the time point for the minimum value for each output
-  * **Time-point** - Enter the time point for which to display correlations for.
+  * **Correlation** - This tab allows you to select which coefficients to calculate and how to transform the data.
-  * **Correlation** - Select correlation model.
+    * **Correlation** - Select which coefficients to calculate
-  * **Inputs** - By default all the parameters that where selected for the analysis are included. Unselect the button **Include all** to manually select which inputs to include.
+    * **Transformation** - Select how to transform the data before coefficients are calculated. Note that transformation is sometimes already performed by the selected correlation. For instance, [[Spearman]] is the same as [[Pearson]] with ranked data.
+    * **Inputs** - Select whether to include all selected parameters, or to filter out parameters that cannot influence the selected outputs.
-**Column**
+    * **R squared** - Include a [[https://en.wikipedia.org/wiki/Coefficient_of_determination|Coefficient of determination]]
-To choose outputs for the table, select one of the table data columns. (You can add and remove columns using the **Add column** and **Remove column** buttons).
-  * **Title** – Enter a name for the column. If you do not enter a name, the name of the output (selected below) will be used.\\
-  * **Output** – A drop-down list with all the available outputs from the simulation.\\
-**Table**
-  * **Format** - Select either scientific or numeric format for the table.
-  * **Digits** - Enter the number of digits to show.
-  * **Add column** - Click to add a new column
-  * **Remove column** - Click to remove the selected column(s).
 ===== See also =====
+  * [[Table]]
   * [[Tables_window|Tables window]]
   * [[Results_window|Results window]]

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