how to obtain the maximum two values of a field, without having to do it manually in the attribute table? ...
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how to obtain the maximum two values of a field, without having to do it manually in the attribute table?
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I have a layer of points corresponding to the vertices extracted from a polygon, and from these I need to obtain the two maximum values and save them in a new layer of points.
because I have more than 150 layers of points I would like to know if it is possible to do it without having to open the table of attributes of each of these and select the values that interest me.
try using the field calculator using the expression "maximum(expression[,group_by][,filter])" but you would not have the second maximum.
qgis pyqgis qgis-3 qgis-processing
asked 1 min ago
JohnJohn
234
add a comment |
I have a layer of points corresponding to the vertices extracted from a polygon, and from these I need to obtain the two maximum values and save them in a new layer of points.
because I have more than 150 layers of points I would like to know if it is possible to do it without having to open the table of attributes of each of these and select the values that interest me.
try using the field calculator using the expression "maximum(expression[,group_by][,filter])" but you would not have the second maximum.
qgis pyqgis qgis-3 qgis-processing
asked 1 min ago
JohnJohn
234
add a comment |
I have a layer of points corresponding to the vertices extracted from a polygon, and from these I need to obtain the two maximum values and save them in a new layer of points.
because I have more than 150 layers of points I would like to know if it is possible to do it without having to open the table of attributes of each of these and select the values that interest me.
try using the field calculator using the expression "maximum(expression[,group_by][,filter])" but you would not have the second maximum.
qgis pyqgis qgis-3 qgis-processing
asked 1 min ago
JohnJohn
234
I have a layer of points corresponding to the vertices extracted from a polygon, and from these I need to obtain the two maximum values and save them in a new layer of points.
because I have more than 150 layers of points I would like to know if it is possible to do it without having to open the table of attributes of each of these and select the values that interest me.
try using the field calculator using the expression "maximum(expression[,group_by][,filter])" but you would not have the second maximum.
qgis pyqgis qgis-3 qgis-processing
qgis pyqgis qgis-3 qgis-processing
asked 1 min ago
JohnJohn
234
asked 1 min ago
JohnJohn
234
asked 1 min ago
JohnJohn
234
asked 1 min ago
JohnJohn
234
asked 1 min ago
JohnJohn
234
234
add a comment |
add a comment |
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