| 69 | | By default, the demo Day of Interest (DoI) is set to 1^^st^^ of January 2008 (first available date), and the correspondent maps are visualized in the left-side panel `'Time slices preview'`. |
| 70 | | The user can then move the analysis window along the time by visualizing so-called Hovmoeller time-latitude and time-longitude profiles along selected orthogonal cross-sections which the used can define by single mouse clicks on the WW globe, within the RoI. As this is done, Hovmoeller maps will appear in the bottom panel of the same name. |
| | 75 | By default, the demo Day of Interest ('''DoI''') is set to 1^^st^^ of January 2008 (first available date), and the correspondent maps are visualized in the left-side panel `'Time slices preview'`. |
| | 76 | The user can then move the analysis window along the time by visualizing so-called Hovmoeller time-latitude and time-longitude profiles along selected orthogonal cross-sections which the used can define by single mouse clicks on the WW globe, within the RoI. As this is done, '''Hovmoeller maps''' will appear in the bottom panel of the same name. |
| 74 | | To aid the user on spotting an interesting DoI, by clicking on a product preview, the image is overlaid on the WW globe and an additional panel called `'Statistics'` shows sample mean and standard deviation of the data, plus a the full plot of temporal evolution of AOT mean values on the RoI. |
| | 81 | To aid the user on spotting an interesting DoI, by clicking on a product preview, the image is overlaid on the WW globe and an additional panel called `'Statistics'` shows, not surprisingly, some sample '''statistics''' on the data: |
| | 82 | |
| | 83 | * sample mean |
| | 84 | * sample standard deviation |
| | 85 | * a the full plot of temporal evolution of AOT mean values on the RoI (the vertical blue line identifies the current DoI) |
| 83 | | WCPS handles all NODATA and different spatial temporal resolutions. |
| | 94 | * right-click on the thumbnail image of the `'Time series preview'` panel |
| | 95 | * enter the `'Send To'` menu |
| | 96 | * click on one of the tools shown |
| | 97 | |
| | 98 | You will see the correspondent bottom-panels being filled as you send products: as the second one is selected, the proper WCPS processing query is sent to the server and the result is visualized. |
| | 99 | |
| | 100 | The 3 features currently available are: |
| | 101 | |
| | 102 | Scatterplot :: 2D plots that compare each co-located RoI pixel of the products is shown here: AOT is the target variable in both the dataset, so scatterplots can help showing the degree of similarity between the two sources by the degree of linearity along the x=y line of the cartesian space. |
| | 103 | |
| | 104 | Delta Map :: While scapperplots analyze the accordance of the two products along the feature space (what is the degree of accordance for high or low AOT loadings?), delta maps maintain the geo-referencing along its axes by showing the difference in AOT estimation on each pixel of the RoI and on the 24H of the selected DoI. Hot spots in the delta map (high relative positive or negative differences) can give hints on ''where'' such differences happen: whether its on land or ocean, which type of land use seems to be the cause, etc. |
| | 105 | |
| | 106 | Merged Map :: After scatterplots and maps are visualized in the bottom-panel, a third feature is available to visualize on the globe the merged map of the two products being compared. This is an other precious tool for researchers: at a global scale different models or sensors might show better predictive power under certain peculiar circumstances, and sometimes the best answer is actually given by a weighted mix of the various output. While no chance is currently provided for a manual insertion of weighting coefficients, a pairwise merging average can be overlaid on the globe by selecting this feature. |
| | 107 | |
| | 108 | After visualizing the merged product on the WW globe, the demo is meant to finish. |
| | 109 | A new tour of analysis can always be undertaken by wither changing date on the reference calendar (bottom-left corner) or by clearing the RoI selection and start it over. |
