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trend analysis. Within the map module, one can select this option to showcast the evolution of a given variable over a selected time period. Choose between a relative (in percent) or an absolute display of the difference (raw values)."; if ($img == "gallery_map1.png") echo "This examples shows the selection of a geospatial data set, the Annual Temperature of the Year 1998. Just enter a specific keyword, select the variable, a year and display your variable as a map. Zoom in, zoom out, pan... explore the data set."; if ($img == "gallery_map3.png") echo "Often used as a nice background, this geospatial data set, the Modis Blue Marble Land Surface, has been overlayed with a couple of additional layers, like national boundaries, capitals, cities and rivers. One can change design and style of the labels easily within the map module."; if ($img == "gallery_map2.png") echo "The Environmental Data Explorer offers access not only to national statistics, but also to subregional and regional aggregations. Just select the specific data set type, choose a specifc ramp color and display the values with the regional names."; if ($img == "gallery_map4.png") echo "Statistics for a wide range of themes have been gathered and harmonized for our users. For a simple cartographic overview of the distribution of the values, just click, after selecting the variable and the time, on the option \"Draw Map\". Add layers, change colors, alter the classification method - use this on-line GIS of the Environmental Data Explorer to explore your data."; if ($img == "gallery_graph10.png") echo "Draw a graph to compare two or more different variables for a given country or region."; if ($img == "gallery_graph11.png") echo "Draw a graph to compare two or more different variables for a given country or region."; if ($img == "gallery_graph4.png") echo "Drawing graphs to show the evolution of the statistical values for any country or (sub)region is very simple."; if ($img == "gallery_graph5.png") echo "Use the \"Accumulated Line Graph\" option to highlight certain aspects of a data sets. In this example one can not only easily follow the steady rise of the Urban Population in each subregion, but one can also retrieve with one glimpse the absolute total of the five chosen subregions."; if ($img == "gallery_graph3.png") echo "A very interesting variation is to put the selected countries/(sub)regions on the x-axis and display a couple of selected years as bars. It facilitates the understanding of the evolutioin within a country/(sub)region and at the same time the comparision with others."; if ($img == "gallery_graph6.png") echo "Another nice example of placing the country/(sub)regional names on the x-axis to facilitate the inner and outer comparision."; if ($img == "gallery_graph8.png") echo "Display the countries as horizontal bar chart renders the differences and at the same time the evolution easily comprehensible."; if ($img == "gallery_table1.png") echo "The functionality of the data table module is very easy and intuitive. Just display the selected variable with the chosen years as a table, and for example sort it descending by any year, display a histogram, show the extremes, link to the graph module..."; if ($img == "gallery_table2.png") echo "If one preselects with the \"Advanced Search\" a region, one will see in the different modules only the countries for this specific region. In this case, only countries belonging to Africa are being displayed."; ?>