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I am working in QGIS. I have a shapefile and its table and I need to export each row as a new file called "Fecha" field:

attribute_table

Finally, I will get 6 shapefiles such as 20130612.shp, 20130714.shp, ...etc

Taras
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Juanjo Valero
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2 Answers2

4

Open the Processing Toolbox and try the 'Split vector layer' tool.

Set the Unique "ID" field to Fecha and the Output file type to shp (or another format if you wish).

Taras
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TeddyTedTed
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3

A solution using the PyQGIS.

Let's assume there is a point layer called 'random_points_test' with its corresponding attribute table, see image below

input

Do not forget to change the layer and field names at the bottom of the code, i.e. split_layer('CMillor_ldcRefAuto_2013_WGSUTMH31','Fecha')

Proceed with Plugins > Python Console > Show Editor > New Editor and paste the script below

# imports
import os, sys

setting up the input layer and defining required parameters


def split_layer(layer_name, field_name):
    # loading layer
    layer = QgsProject.instance().mapLayersByName(layer_name)[0]
    layer_fields = layer.fields()
    idx_of_that_field = layer_fields.indexFromName(field_name)


if not layer.isValid():
    raise ValueError("Layer failed to load!")
    sys.exit()

# getting a set with unique key attributes
list_attributes = []
for feat in layer.getFeatures():
    list_attributes.append(feat.attributes()[idx_of_that_field])
list_attributes = set(list_attributes)

# checking a number of features in the input layer
if layer.featureCount() < 2:
    raise ValueError("Layer contains only one feature. No reason to double save it")

else:
    # getting a working dir, where the input layer is stored
    path_to_file = layer.dataProvider().dataSourceUri()
    working_dir = os.path.split(path_to_file)[0]

    # looping over attributes from the set, selecting features and saving them as a new single layer
    for i in list_attributes:
        selection = layer.selectByExpression('{0}=\'{1}\''.format(field_name, i))
        writer = QgsVectorFileWriter.writeAsVectorFormat(layer, working_dir + "/{}.shp".format(i), "UTF-8", layer.crs(), driverName = "ESRI Shapefile", onlySelected = True)

layer.removeSelection()




split_layer('random_points_test','Info')

Press Run script run script and get the output like this

result

A name of each output will match a pattern like '<attribute_value>.shp' e.g. 'Test 2', and should not '<attribute_field_name><attribute_value>.shp' i.e. 'Fecha_20130612.shp' etc.

If you want to change the directory where the output should be saved, please create this folder beforehand, see this thread for more details. And do not forget to apply changed in the writer = ....

References:

Taras
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