Unlike standard plots, ensemble plots will display all computed ensemble members’ results at the same time. Since there can be many computed members in an ensemble alternative, viewing dozens of curves from the same plot is usually not conducive to understanding the overall results.
In an effort facilitate results analysis, a new plotting paradigm was created. For each plotted parameter, all members of the ensemble (traces) are drawn in the same color with a slightly thinner line and with a moderately-high level of transparency. When several traces all plot on top of each other, the density of color increases and you can see where the results overlap. To also aid in analysis, five additional curves are added for each plotted parameter to reflect the minimum, maximum, median, 25 percent, and 75 percent probabilities computed across the computed members of the ensemble for each timestep. These additional curves are drawn with a thicker line weight and zero transparency.
To use the collection plot, HEC-DSS collection records must be selected as a Condensed-Group Collection catalog form in CWMS-Vue.
An example collection plot is shown in the figure below.
Plotting more than one collection set displays each group using a different default color as shown in the example below.
You can change the color of collection sets by editing the properties of the plot. Right-click on the collection in the legend of the plot and select Edit Properties.
You can customize the colors used for each of the collection sets displayed in your plot, as shown in the example below.
