I have a point layer with around 1.3 million features where one of the columns in the attributes table contains dates in the format YYYY-MM-DD.
Starting from an arbitrary date, say 2001-01-01, I would like to generate a series of maps which show all point features that have a date that is BEFORE that exogenously given starting date above and BEFORE every following month from then. In this example, I want to generate a map with all features before 2001-01-01, another one with all features before 2001-02-01, 2001-03-01 etc. Because I will have to generate many of such maps, I would like to automate this process.
To my knowledge, the atlas function will not do the job because it will iterate over each feature in the coverage layer. Also, I was not able to use the QGIS modeler with which I was hoping to make a selection by expression and then call the print composer.
Is there any functionality I was missing? Thank you so much for your help.
Software: QGIS 2.8.1, OS: MAX OSX
أكثر...
Starting from an arbitrary date, say 2001-01-01, I would like to generate a series of maps which show all point features that have a date that is BEFORE that exogenously given starting date above and BEFORE every following month from then. In this example, I want to generate a map with all features before 2001-01-01, another one with all features before 2001-02-01, 2001-03-01 etc. Because I will have to generate many of such maps, I would like to automate this process.
To my knowledge, the atlas function will not do the job because it will iterate over each feature in the coverage layer. Also, I was not able to use the QGIS modeler with which I was hoping to make a selection by expression and then call the print composer.
Is there any functionality I was missing? Thank you so much for your help.
Software: QGIS 2.8.1, OS: MAX OSX
أكثر...