tag:blogger.com,1999:blog-4741970181714760187.post29481874686409203..comments2008-04-28T12:52:37.827+01:00Bjørn Sandvikhttp://www.blogger.com/profile/16080335362672606377noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4741970181714760187.post-91876283010919283932008-04-28T12:52:00.000+01:002008-04-28T12:52:00.000+01:002008-04-28T12:52:00.000+01:00Hi Landry,<BR/><BR/>Thanks for your feedback. I'm happy that you like my work. <BR/><BR/>I've just published <A HREF="http://blog.thematicmapping.org/2008/04/using-google-charts-with-kml.html" REL="nofollow">a new post showing pie charts in Google Earth</A>. The colours are here interpolated from a orange base colour. I'm a bit careful using red, as it's often considered as "danger" (even though a large old population might be a big challenge...).<BR/><BR/>Since the pie charts are mathematically scaled in direct proportion of the total population, some charts will be invisible due to the large populations in India and China. On way to avoid this is to specify a minimum size, but then the charts wouldn't be true proportional any more. <BR/><BR/>The chart size is actually linked to the level of zoom. The size increases by the same fraction as the rest of the map. <BR/><BR/>By clicking a pie chart in Google Earth you can see a larger version of the chart. A similar feature could be added to the OpenLayers version.Bjørn Sandvikhttp://www.blogger.com/profile/16080335362672606377noreply@blogger.comtag:blogger.com,1999:blog-4741970181714760187.post-43290486687122486862008-04-22T09:41:00.000+01:002008-04-22T09:41:00.000+01:002008-04-22T09:41:00.000+01:00First, forgive me for my very poor english. I'm a french teacher of History and Geography.<BR/><BR/>Your blog is wonderful !<BR/><BR/>The choropleth polygons map with G Earth is amazing.<BR/><BR/>The thematic map with Open Layers too. <BR/><BR/>Don't you think that information on age distribution could be better with a progression of colour intensity like yellow (0-14) orange (15-59) red (>60) (or green yellow red).<BR/><BR/>Other pb: When we want to see the all world map, some pie-chart are invisible. <BR/><BR/>Is it possible to link the size of the pie-charts with the level of zoom ??<BR/><BR/>Congratulation for this research about open thematic map !Landryhttp://www.blogger.com/profile/05918925861234669716noreply@blogger.com