.. only:: html Vector creation =============== .. only:: html .. contents:: :local: :depth: 1 .. _qgisarrayoffsetlines: Array of offset (parallel) lines -------------------------------- Creates copies of line features in a layer, by creating multiple offset versions of each feature. Each new version is incrementally offset by a specified distance. Positive distance will offset lines to the left, and negative distances will offset them to the right. .. figure:: img/offset_lines_array.png :align: center In blue the source layer, in red the offset one |checkbox| Allows :ref:`features in-place modification ` .. seealso:: :ref:`qgisoffsetline`, :ref:`qgisarraytranslatedfeatures` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input layer** - ``INPUT`` - [vector: line] - Input line vector layer to use for the offsets. * - **Number of features to create** - ``COUNT`` - [number |dataDefined|] Default: 10 - Number of offset copies to generate for each feature * - **Offset step distance** - ``OFFSET`` - [number |dataDefined|] Default: 1.0 - Distance between two consecutive offset copies * - **Segments** - ``SEGMENTS`` - [number] Default: 8 - Number of line segments to use to approximate a quarter circle when creating rounded offsets * - **Join style** - ``JOIN_STYLE`` - [enumeration] Default: 0 - Specify whether round, miter or beveled joins should be used when offsetting corners in a line. One of: * 0 --- Round * 1 --- Miter * 2 --- Bevel * - **Miter limit** - ``MITER_LIMIT`` - [number] Default: 2.0 - Only applicable for mitered join styles, and controls the maximum distance from the offset curve to use when creating a mitered join. * - **Offset lines** - ``OUTPUT`` - [vector: line] Default: ``[Create temporary layer]`` - Specify the output line layer with offset features. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Offset lines** - ``OUTPUT`` - [vector: line] - Output line layer with offset features. The original features are also copied. .. _qgisarraytranslatedfeatures: Array of translated features ---------------------------- Creates copies of features in a layer by creating multiple translated versions of each. Each copy is incrementally displaced by a preset amount in the X, Y and/or Z axis. M values present in the geometry can also be translated. .. figure:: img/translate_array.png :align: center Input layers in blue tones, output layers with translated features in red tones |checkbox| Allows :ref:`features in-place modification ` .. seealso:: :ref:`qgistranslategeometry`, :ref:`qgisarrayoffsetlines` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input layer** - ``INPUT`` - [vector: any] - Input vector layer to translate * - **Number of features to create** - ``COUNT`` - [number |dataDefined|] Default: 10 - Number of copies to generate for each feature * - **Step distance (x-axis)** - ``DELTA_X`` - [number |dataDefined|] Default: 0.0 - Displacement to apply on the X axis * - **Step distance (y-axis)** - ``DELTA_Y`` - [number |dataDefined|] Default: 0.0 - Displacement to apply on the Y axis * - **Step distance (z-axis)** - ``DELTA_Z`` - [number |dataDefined|] Default: 0.0 - Displacement to apply on the Z axis * - **Step distance (m values)** - ``DELTA_M`` - [number |dataDefined|] Default: 0.0 - Displacement to apply on M * - **Translated** - ``OUTPUT`` - [same as input] Default: ``[Create temporary layer]`` - Output vector layer with translated (moved) copies of the features. The original features are also copied. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Translated** - ``OUTPUT`` - [same as input] - Output vector layer with translated (moved) copies of the features. The original features are also copied. .. _qgiscreategrid: Create grid ----------- Creates a vector layer with a grid covering a given extent. Grid cells can have different shapes: .. figure:: img/create_grid.png :align: center Different grid cell shapes The size of each element in the grid is defined using a horizontal and vertical spacing. The CRS of the output layer must be defined. The grid extent and the spacing values must be expressed in the coordinates and units of this CRS. ``Default menu``: :menuselection:`Vector --> Research Tools` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Grid type** - ``TYPE`` - [enumeration] Default: 0 - Shape of the grid. One of: * 0 --- Point * 1 --- Line * 2 --- Rectangle (polygon) * 3 --- Diamond (polygon) * 4 --- Hexagon (polygon) * - **Grid extent** - ``EXTENT`` - [extent] - Extent of the grid * - **Horizontal spacing** - ``HSPACING`` - [number] Default: 1.0 - Size of a grid cell on the X-axis * - **Vertical spacing** - ``VSPACING`` - [number] Default: 1.0 - Size of a grid cell on the Y-axis * - **Horizontal overlay** - ``HOVERLAY`` - [number] Default: 0.0 - Overlay distance between two consecutive grid cells on the X-axis * - **Vertical overlay** - ``VOVERLAY`` - [number] Default: 0.0 - Overlay distance between two consecutive grid cells on the Y-axis * - **Grid CRS** - ``CRS`` - [crs] Default: *Project CRS* - Coordinate reference system to apply to the grid * - **Grid** - ``OUTPUT`` - [vector: any] Default: ``[Create temporary layer]`` - Resulting vector grid layer. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Grid** - ``OUTPUT`` - [vector: any] - Resulting vector grid layer. The output geometry type (point, line or polygon) depends on the :guilabel:`Grid type`. .. _qgiscreatepointslayerfromtable: Create points layer from table ------------------------------ Creates points layer from a table with columns that contain coordinates fields. Besides X and Y coordinates you can also specify Z and M fields. Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input layer** - ``INPUT`` - [vector: any] - Input vector layer or a table. * - **X field** - ``XFIELD`` - [tablefield: any] - Field containing the X coordinate * - **Y field** - ``YFIELD`` - [tablefield: any] - Field containing the Y coordinate * - **Z field** Optional - ``ZFIELD`` - [tablefield: any] - Field containing the Z coordinate * - **M field** Optional - ``MFIELD`` - [tablefield: any] - Field containing the M value * - **Target CRS** - ``TARGET_CRS`` - [crs] Default: ``EPSG:4326`` - Coordinate reference system to use for layer. The provided coordinates are assumed to be compliant. * - **Points from table** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - Specify the resulting point layer. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Points from table** - ``OUTPUT`` - [vector: point] - The resulting point layer .. _qgisgeneratepointspixelcentroidsalongline: Generate points (pixel centroids) along line -------------------------------------------- Generates a point vector layer from an input raster and line layer. The points correspond to the pixel centroids that intersect the line layer. .. figure:: img/points_centroids.png :align: center Points of the pixel centroids Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Raster layer** - ``INPUT_RASTER`` - [raster] - Input raster layer * - **Vector layer** - ``INPUT_VECTOR`` - [vector: line] - Input line vector layer * - **Points along line** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - Resulting point layer with pixel centroids. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Points along line** - ``OUTPUT`` - [vector: point] - Resulting point layer with pixel centroids .. _qgisgeneratepointspixelcentroidsinsidepolygons: Generate points (pixel centroids) inside polygon ------------------------------------------------ Generates a point vector layer from an input raster and polygon layer. The points correspond to the pixel centroids that intersect the polygon layer. .. figure:: img/points_centroids_polygon.png :align: center Points of the pixel centroids Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Raster layer** - ``INPUT_RASTER`` - [raster] - Input raster layer * - **Vector layer** - ``INPUT_VECTOR`` - [vector: polygon] - Input polygon vector layer * - **Points inside polygons** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - Resulting point layer of pixel centroids. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Points inside polygons** - ``OUTPUT`` - [vector: point] - Resulting point layer of pixel centroids .. _qgisimportphotos: Import geotagged photos ----------------------- Creates a point layer corresponding to the geotagged locations from JPEG images from a source folder. The point layer will contain a single PointZ feature per input file from which the geotags could be read. Any altitude information from the geotags will be used to set the point's Z value. Besides longitude and latitude also altitude, direction and timestamp information, if present in the photo, will be added to the point as attributes. Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input folder** - ``FOLDER`` - [folder] - Path to the source folder containing the geotagged photos * - **Scan recursively** - ``RECURSIVE`` - [boolean] Default: False - If checked, the folder and its subfolders will be scanned * - **Photos** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - Specify the point vector layer for the geotagged photos. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. * - **Invalid photos table** Optional - ``INVALID`` - [table] Default: ``[Skip output]`` - Specify the table of unreadable or non-geotagged photos. One of: * Skip Output * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Photos** - ``OUTPUT`` - [vector: point] - Point vector layer with geotagged photos. The form of the layer is automatically filled with paths and photo previews settings. * - **Invalid photos table** Optional - ``INVALID`` - [table] - Table of unreadable or non-geotagged photos can also be created. .. _qgispointstopath: Points to path -------------- Converts a point layer to a line layer, by joining points in an order defined by a field in the input point layer (if the order field is a date/time field, the format must be specified). Points can be grouped by a field to distinguish line features. In addition to the line vector layer, a text file is output that describes the resulting line as a start point and a sequence of bearings / directions (relative to azimuth) and distances. Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input point layer** - ``INPUT`` - [vector: point] - Input point vector layer * - **Order field** - ``ORDER_FIELD`` - [tablefield: any] - Field containing the order to connect the points in the path * - **Group field** Optional - ``GROUP_FIELD`` - [tablefield: any] - Point features of the same value in the field will be grouped in the same line. If not set, a single path is drawn with all the input points. * - **Date format (if order field is DateTime)** Optional - ``DATE_FORMAT`` - [string] - The format to use for the ``Order field`` parameter. Specify this only if the ``Order field`` is of type Date/Time. * - **Paths** - ``OUTPUT`` - [vector: line] Default: ``[Create temporary layer]`` - Specify the line vector layer of the path. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. * - **Directory for text output** - ``OUTPUT_TEXT_DIR`` - [folder] Default: ``[Skip output]`` - Specify the directory that will contain the description files of points and paths. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Paths** - ``OUTPUT`` - [vector: line] - Line vector layer of the path * - **Directory for text output** - ``OUTPUT`` - [folder] - Directory containing description files of points and paths .. _qgisrandompointsalongline: Random points along line ------------------------ Creates a new point layer, with points placed in the lines of another layer. For each line in the input layer, a given number of points is added to the resulting layer. A minimum distance can be specified, to avoid points being too close to each other. Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input point layer** - ``INPUT`` - [vector: line] - Input line vector layer * - **Number of points** - ``POINTS_NUMBER`` - [number] Default: 1 - Number of points to create * - **Minimum distance between points** - ``MIN_DISTANCE`` - [number] Default: 0.0 - The minimum distance between points * - **Random points** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - The output random points. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Random points** - ``OUTPUT`` - [vector: point] - The output random points layer. .. _qgisrandompointsinextent: Random points in extent ----------------------- Creates a new point layer with a given number of random points, all of them within a given extent. A minimum distance can be specified, to avoid points being too close to each other. ``Default menu``: :menuselection:`Vector --> Research Tools` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input extent** - ``EXTENT`` - [extent] - Map extent for the random points * - **Number of points** - ``POINTS_NUMBER`` - [number] Default: 1 - Number of point to create * - **Minimum distance between points** - ``MIN_DISTANCE`` - [number] Default: 0.0 - The minimum distance between points * - **Target CRS** - ``TARGET_CRS`` - [crs] Default: *Project CRS* - CRS of the random points layer * - **Random points** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - The output random points. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Random points** - ``OUTPUT`` - [vector: point] - The output random points layer. .. _qgisrandompointsinlayerbounds: Random points in layer bounds ----------------------------- Creates a new point layer with a given number of random points, all of them within the extent of a given layer. A minimum distance can be specified, to avoid points being too close to each other. ``Default menu``: :menuselection:`Vector --> Research Tools` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input layer** - ``INPUT`` - [vector: polygon] - Input polygon layer defining the area * - **Number of points** - ``POINTS_NUMBER`` - [number] Default: 1 - Number of points to create * - **Minimum distance between points** - ``MIN_DISTANCE`` - [number] Default: 0.0 - The minimum distance between points * - **Random points** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - The output random points. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Random points** - ``OUTPUT`` - [vector: point] - The output random points layer. .. _qgisrandompointsinsidepolygons: Random points inside polygons ----------------------------- Creates a new point layer with a given number of random points inside each polygon of the input polygon layer. Two sampling strategies are available: * Points count: number of points for each feature * Points density: density of points for each feature A minimum distance can be specified, to avoid points being too close to each other. ``Default menu``: :menuselection:`Vector --> Research Tools` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input layer** - ``INPUT`` - [vector: polygon] - Input polygon vector layer * - **Sampling strategy** - ``STRATEGY`` - [enumeration] Default: 0 - Sampling strategy to use. One of: * 0 --- Points count: number of points for each feature * 1 --- Points density: density of points for each feature * - **Expression** - ``EXPRESSION`` - [number |dataDefined|] Default: 1.0 - The number or density of points, depending on the chosen :guilabel:`Sampling strategy`. * - **Minimum distance between points** - ``MIN_DISTANCE`` - [number] Default: 0.0 - The minimum distance between points * - **Random points** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - The output random points. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Random points** - ``OUTPUT`` - [vector: point] - The output random points layer. .. _qgispixelstopoints: Raster pixels to points ----------------------- Creates a vector layer of points corresponding to each pixel in a raster layer. Converts a raster layer to a vector layer, by creating point features for each individual pixel's center in the raster layer. Any nodata pixels are skipped in the output. Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Raster layer** - ``INPUT_RASTER`` - [raster] - Input raster layer * - **Band number** - ``RASTER_BAND`` - [raster band] - Raster band to extract data from * - **Field name** - ``FIELD_NAME`` - [string] Default: 'VALUE' - Name of the field to store the raster band value * - **Vector points** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - Specify the resulting point layer of pixels centroids. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Vector points** - ``OUTPUT`` - [vector: point] - Resulting point layer with pixels centroids .. _qgispixelstopolygons: Raster pixels to polygons ------------------------- Creates a vector layer of polygons corresponding to each pixel in a raster layer. Converts a raster layer to a vector layer, by creating polygon features for each individual pixel's extent in the raster layer. Any nodata pixels are skipped in the output. Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Raster layer** - ``INPUT_RASTER`` - [raster] - Input raster layer * - **Band number** - ``RASTER_BAND`` - [raster band] - Raster band to extract data from * - **Field name** - ``FIELD_NAME`` - [string] Default: 'VALUE' - Name of the field to store the raster band value * - **Vector polygons** - ``OUTPUT`` - [vector: polygon] Default: ``[Create temporary layer]`` - Specify the resulting polygon layer of pixel extents. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Vector polygons** - ``OUTPUT`` - [vector polygon] - Resulting polygon layer of pixel extents .. _qgisregularpoints: Regular points -------------- Creates a new point layer with its points placed in a regular grid within a given extent. The grid is specified either by the spacing between the points (same spacing for all dimensions) or by the number of points to generate. In the latter case, the spacing will be determined from the extent. In order to generate a full rectangulare grid, at least the number of points specified by the user is generated for the latter case. Random offsets to the point spacing can be applied, resulting in a non-regular point pattern. ``Default menu``: :menuselection:`Vector --> Research Tools` Parameters .......... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Input extent (xmin, xmax, ymin, ymax)** - ``EXTENT`` - [extent] - Map extent for the random points * - **Point spacing/count** - ``SPACING`` - [number] Default: 100 - Spacing between the points, or the number of points, depending on whether ``Use point spacing`` is checked or not. * - **Initial inset from corner (LH side)** - ``INSET`` - [number] Default: 0.0 - Offset the points relative to the upper left corner. The value is used for both the X and Y axis. * - **Apply random offset to point spacing** - ``RANDOMIZE`` - [boolean] Default: False - If checked the points will have a random spacing * - **Use point spacing** - ``IS_SPACING`` - [boolean] Default: True - If unchecked the point spacing is not taken into account * - **Output layer CRS** - ``CRS`` - [crs] Default: *Project CRS* - CRS of the random points layer * - **Regular points** - ``OUTPUT`` - [vector: point] Default: ``[Create temporary layer]`` - Specify the output regular point layer. One of: * Create Temporary Layer (``TEMPORARY_OUTPUT``) * Save to File... * Save to Geopackage... * Save to PostGIS Table The file encoding can also be changed here. Outputs ....... .. list-table:: :header-rows: 1 :widths: 20 20 20 40 :stub-columns: 0 * - Label - Name - Type - Description * - **Regular points** - ``OUTPUT`` - [vector: point] - The output regular point layer. .. Substitutions definitions - AVOID EDITING PAST THIS LINE This will be automatically updated by the find_set_subst.py script. If you need to create a new substitution manually, please add it also to the substitutions.txt file in the source folder. .. |checkbox| image:: /static/common/checkbox.png :width: 1.3em .. |dataDefined| image:: /static/common/mIconDataDefine.png :width: 1.5em