Controls the display of labels for a layer. Enter any value between +100 percent and -100 percent. The isFeatureLayer, isGroupLayer, and isRasterLayer properties allow you to identify or isolate the majority of layer types but not all layer types. Property displays the name of the IMS service. If it is not valid, the workspace will not be replaced. UserName —A user account. A wildcard is based on the label class name and is not case sensitive. For more information about working with the CIM and samples, see Python CIM access. There are a few specialized layers and datasets that don't fall into one of these three categories: annotation subclasses, dimension features, network datasets, terrain datasets, topology datasets, and so on. Not all layers support the same set of properties; the supports property can be used to test if a layer supports that property before attempting to set it. See Returns a layer's data source connection information as a Python dictionary. information. It then uses time information (start time and end time) to calculate the time extent of a time-enabled layer. The default, normal brightness, is 0%. Replaces a data source for a layer in a map document (.mxd) or layer (.lyr) file. This method provides an easy way to manage a layer's selection. The listLayers method on the Map Class returns index values that are generated from top to bottom as they appear in the table of contents or the way they appear in a layer file. If dataset_name is not provided, the replaceDataSource method will attempt to replace the dataset by finding a table with a the same name as the layer's current dataset property. There are numerous types of layers, and not all of them support the same set of properties. There are numerous types of layers and not all of them support the same set of properties. This example does not print information about non-SDE or web service layers. If the input's data source is a feature service, it is recommended that the underlying ArcGIS Server use standardized SQL queries. The layer object provides access to many of the common layer properties found in the ArcMap Layer Properties dialog box and it also provides methods for saving layer files. The support method gives you the option of testing the property before trying to get or set its value on a layer type that doesn't support it. Extrudes 2D features in a layer to display 3D symbology. There is a method and a property on the Layer object that help with this. You don't need to create the web map JSON; the APIs take care of it for you. For a query layer with a pseudocolumn as the object-id field (for example, FID), you must provide orderByFields or else the query will fail. A layer's maximum scale threshold for 2D maps and its maximum distance above ground for 3D maps. I read the doc, but I don't understand. Service —The name or port number of the process running on the ArcSDE server. The da cursors require you to list the fields you want to work with. Out[26]: {'wkid': 102100, 'latestWkid': 3857} By default, the query results are in the same spatial reference as the source layer. Le plus ancien. Feature layers define the spatial reference, geometry type (points, lines or polygons), attribute fields, and the permission settings for the data. Not all layer symbology class types are supported; for those that are not, the keyword OTHER is returned. Next, it verifies that the layer has graduated color symbology. It is good practice to delete this reference from memory before the script closes. Provides access to basic layer properties and methods. The ListLayers function returns index values that are generated from top to bottom as they appear in the table of contents or the way they appear in a layer (.lyr) file. The web services dictionary contains keys that work for all service layer types and also includes specific keys that work for only a particular web service type (for example, WMS has a key called WMSTitle). The supports property will return a true if a layer supports that property. lyr.brightness = 10. Not all layers support the visible property (for example, restricted web service layers), so it is good practice to test for this ahead of time using the supports method. A string that specifies which selection method to use. If your web tool replaces the service layers with staged vector layers after running ConvertWebMapToArcGISProject, updateLayerFromJSON will apply the renderer (or other layer properties) as specified in the webmap_json to the corresponding vector layers staged in the layout template. Query layers allow both spatial and nonspatial information stored in a DBMS to be easily integrated into GIS projects within ArcMap. Name —WMS service layers only. Not all layers support the brightness property (for example, group layers and feature layers), so it is good practice to test for this ahead of time using the supports method. When a layer is loaded from a layer file it will remember the file name and use that when the save method is called. The layer definition is a subset of the webmap_json used in the ConvertWebMapToArcGISProject function. Not all layers support the definitionQuery property (for example, raster layers and group layers), so it is good practice to test for this ahead of time using the supports method. However, you need to extract the layer definition from the Returns True if a layer is a GIS service layer. Returns True if a layer is a raster layer. For example, a map with a single group layer that contains three sublayers will return a list of four layer names, the group layer being the first and the three sublayers being the second, third, and fourth. For example, see the following code:if lyr.supports("BRIGHTNESS"): The default, neutral contrast, is 0%. There are two ways of determining if a layer is a group layer. Since query layers are using SQL to directly query database tables and views, spatial information used by a query layer is not required to be in a geodatabase. A string that sets the output version number. This property is valuable when trying to determine whether a layer belongs to a group layer. ArcGIS API for JavaScript and ArcGIS Web AppBuilder allow you to get this JSON string from the web app. The replaceDataSource method allows you to change a layer's workspace and source dataset. ServiceName —IMS service layers only. File or personal geodatabases are not valid input workspaces for this tool. If your geoprocessing services replaces the service layers with staged vector layers after running ConvertWebMapToMapDocument, updateLayerFromJSON will apply the renderer (or other layer properties) as specified in the webmap_json to the corresponding vector layers staged in the template map document. Selects the features that are not in the current selection but are in the, Selects the features that are in the current selection and the, Selects the features that are in the current selection or the, Selects all the features in both the current selection and those in the. Provides the ability to set or get the layer's maximum scale threshold. Not all layers support the labelClasses property (for example, raster layers and annotation layers), so it is good practice to test for this ahead of time using the supports method. Silverlight) allow developers to easily get this JSON string from The following script modifies the symbology for a layer in a map document. Note: Python Lists are used for setting the oidList but Python Sets get returned from the getSelectionSet method on the Layer object. If set to True, a workspace will only be updated if the workspace_path value is a valid workspace. A string that specifies the extrusion method. feature_layer. Feature layer query . This method provides an easy way to manage a layer's selection. Example one below shows how you can get the time extent of your time-enabled layer using the startTime and endTime. Property displays the description title string for the WMS layer. To perform case-insensitive queries, set ignore_case to True. If the SQL query does not return a spatial column, the output will be a stand-alone table. If it is not valid, the workspace will not be replaced. If this function is executed prior to opening a map document (.mxd) with the MapDocument function or a layer file with the Layer function, then SDE layers will render. If the name value is equal to the longName value, the layer is not inside a group layer. The layer definition in JavaScript Object Notation (JSON) format. WMSTitle —WMS service layers only. Changing a layer's data source is a common requirement. The results of the query will be added to ArcMap as a query layer. Returns a Python list of LabelClass objects in a layer. Créé 07 mars. The supports property can be used to test which properties a layer does support. query now returns true curves in output geometries when the returnTrueCurves parameter is set to true. For example, a feature layer supports a definition query whereas a raster layer does not, but a raster catalog does. Use a regular feature layer and set its definition query using Layer object using arcpy. The default value will use the current version. The name of a layer the way it would appear in the table of contents. Not all layers support the same set of properties. The Layer object has a single, generic design to work with all layers. To clear the minimum scale, set the value to 0. Returns True if a layer is a feature layer. These include ImageServer, IMS, MapServer, TiledInternetLayer, WMS, and WCS. There are a limited number of supported symbology types for which properties and methods are available. If you have access to the Beta program you can take a look at the "Make Query Layer" tool in 10.1 Beta. For example, a layer named Layer1 in a group layer named Group1 will have a longName value of Group1\Layer1. If an empty string is passed, then all workspace paths will be replaced with the replace_workspace_path parameter depending on the value of the validate parameter. A string that includes the workspace path to the new data or connection file. Provides an easy way to retrieve the layer's current selection. Property displays the text string for the WMS layer used for machine-to-machine communication. If the input is a feature class or dataset path, this tool will automatically create and return a new layer with the result of the tool applied. If set to True, the layer will draw; if set to False, the layer will not be drawn. Layer definition query and symbology not updating using arcpy - what am I missing? A layer will not display when zoomed in beyond the maximum scale. The same applies if a group layer is within another group layer. The name of a particular layer property that will be tested. Saves a layer (.lyr) file to a different file name and, optionally, a previous version. Extrusion is the process of vertically stretching a flat 2D shape to create a 3D object. Query layers will only work with enterprise databases. If a value of OTHER is returned, then the layer's symbology can't be modified. Learn more about JSON Curve Objects in Geometry Objects. For example, the name of a layer nested inside a group layer within another group layer may look something like Group1\Group2\LayerName. File or personal geodatabases are not valid input workspaces for this tool. By default, queries are case sensitive. import arcpy schoolsLayer = "Schools" suburbsLayer = "Suburbs" # get an update cursor as we will be changing values rows = arcpy.UpdateCursor(suburbsLayer) # loop through each suburb in the layer for row in rows: polygon = row.SHAPE arcpy.SelectLayerByLocation_management(schoolsLayer,"INTERSECT",polygon) A combination of asterisks (*) and characters can be used to help The following script will reference a layer (.lyr) file, find all layers called Highways, turns on labels, and save the results to a new layer file. Returns True if a layer is a group layer. Server —Property displaying the server name. A search cursor allows you to operate on a single record (of a table, view, or layer) at a time. published and accessed over the web using standard technologies and For more detailed discussion, parameter information, scenarios, and code samples, please refer to the Updating and fixing data sources with arcpy.mapping help topic. Second, you can evaluate the longNameproperty. The variable that references a layer file on disk will place a lock on the (.lyr) file. Not all layers support the transparency property (for example, fabric group layers and web service sublayers), so it is good practice to test for this ahead of time using the supports method. Returns the complete path for the layer's data source. Enter a plus or minus sign to the left of the value to specify whether it is above or below 0. Determines whether searches will be case sensitive or not. UserName —Property displaying the user name used to access a secured service. The layer file contains a custom color ramp that is applied to the layer. Provides an option to save a layer (.lyr) file to a different file name and, optionally, a previous version. Controls the display of a layer. The returned results are dictionary key-value pairs. For example, a layer named Layer1 in a group layer named Group1 will have a longName value of Group1\Layer1. First, you can check to see if the layer supports the isGroupLayer property. For more information and a code sample, see ConvertWebMapToMapDocument. protocols. For example, a feature layer supports a definition query, whereas a raster layer does not, but a raster catalog does. Layers can be referenced from within a project using the listLayers method on the Map class or in a layer file (.lyr or .lyrx) stored on disk using the listLayers method on the LayerFile class. It gives you the ability to test if the layer supports a property before trying to get or set its value, reducing the need for additional error trapping. CIM-level access to additional object properties was introduced at version 2.4. Map documents that contain these layers will prompt the user to enter the appropriate information while the document is opening. It first updates the layer's symbology using a layer file on disk with the UpdateLayer function. Provides the ability to set or get the name of a layer the way it would appear in the ArcMap table of contents. A symbolized extent takes into account the area of the feature's symbol when building the extent rectangle. There are a few specialized layers and datasets that don't fall into one of these general categories: annotation subclasses, dimension features, terrain datasets, topology datasets, and so on. This will only be SDE for ArcSDE layer types. a web application. Features that are not supported in prior versions of the software will be removed from the newly saved layer. Type 0 if you don't want a layer to be transparent. It is important that all layers in a map have a unique name so they can be easily referenced by their names. If set to True, the layer will draw; if set to False, the layer will not be drawn. This function is intended to be used in a web tool that uses the ConvertWebMapToArcGISProject function in web map printing applications that support changing the renderer (or other properties) of dynamic web service layers. String: Exemple de code. Depending on the symbology type, a layer's symbology can be modified. Rather than having to work with different, individual layer objects for all the possible layer types and property combinations, there are some useful properties that allow you to obtain information about a layer and its supported properties. A combination of asterisks (*) and characters can be used to help A value of 0 is not transparent. Type a plus or minus sign to the left of the value to specify whether it is above or below 0. Rather than creating individual layer objects for all possible layer types and property combinations, a support method was created to help identify which layer types support which properties. The layer object provides access to many of the common layer properties found in the ArcMap Layer Properties dialog box and it also provides methods for saving layer files. Not all layers support the showLabels property (for example, raster layers and annotation layers), so it is good practice to test for this ahead of time using the supports method. For example, imagine you have a table of customer data, and you want to find those customers who spent more than $50,000 with you last year and whose business type is restaurant. If set to True, labels will display; if set to False, labels will not be drawn. Database —The name of the enterprise RDBMS database. Returns True if a layer is an ArcGIS Network Analyst extension network dataset layer. Not all layers support the dataSource property (for example, annotation classes and web services), so it is good practice to test for this ahead of time using the supports method. Time-management operations can be performed for time-enabled layers. MakeFeatureLayer_management ("C:/data/chesapeake.gdb/bayshed", "mainlines_layer") # Create a … arcpy query-layer 189 . If the connection to ArcGIS for Server is through the Internet (HTTP), this value will be null. The Layerobject is essential for managing layers that reside within a map document (.mxd) or within a layer (.lyr) file. Votes. Layer types that support the showLabels property also support the labelClasses property. Provides access to connection information for ArcSDE and web service layers. Polygon and line features have all five extrusion_type options available; point features don't use MAX_HEIGHT or MIN_HEIGHT options. A layer's brightness value. function. However, you need to extract the layer definition from the full webmap_json. same data source that I can use to create a Query Layer in ArcMap). Similar to the example above, since some SDE layers may be secured with password information, a temporary SDE connection file is created. ACCESS_WORKSPACE — A personal geodatabase or Access workspace, ARCINFO_WORKSPACE — An ArcInfo coverage workspace, FILEGDB_WORKSPACE —A file geodatabase workspace, OLEDB_WORKSPACE —An OLE database workspace, PCCOVERAGE_WORKSPACE —A PC ARC/INFO Coverage workspace, SDE_WORKSPACE —An SDE geodatabase workspace, SHAPEFILE_WORKSPACE —A shapefile workspace, NEW —Creates a new feature selection from the, DIFFERENCE —Selects the features that are not in the current selection but are in the, INTERSECT —Selects the features that are in the current selection and the, SYMDIFFERENCE —Selects the features that are in the current selection or the, UNION —Selects all the features in both the current selection and those in the, BRIGHTNESS —A raster layer's brightness value, CONTRAST —A raster layer's contrast value, DATASETNAME —A layers dataset name the way it appears in the workspace, DATASOURCE —A layer's file path or connection file, DEFINITIONQUERY —A layer's definition query string, DESCRIPTION —A layer's description string, LABELCLASSES —A layer's list of label classes, LONGNAME —A layer's path including the group layer(s) it may be nested within, SERVICEPROPERTIES —Connection information for SDE and web service layers, SHOWLABELS —A Boolean indicating if a layer's lables are toggled on or off, SYMBOLOGYTYPE —A layer's symbology class type, TRANSPARENCY —A layer's transparency value, VISIBLE —A Boolean indicating if a layer is toggled on or off in the TOC, WORKSPACEPATH —A layer's workspace or connection file path. Properties using a layer is a GIS service layer class properties supported symbology types for which properties and methods available... Equal to the longName property will contain both the sublayer and top level layer name protected... Valid workspace True curves in an input geometry parameter color symbology previous.. Class and exports the map is printed or exported ways to reference a layer is a valid workspace (! When a layer (.lyr ) file to a database, and isRasterLayer allow! In each map in a layer will not be drawn and not all of them support the same set properties! Of them support the same set of properties the ConvertWebMapToMapDocument function maps and maximum! Network ( LAN ), this property is valuable when trying to whether. Whether a layer 's data source that I can use the new data or connection file that is applied the! Its maximum distance above ground for 3D maps prints the name value is a group layer structure be. For those that are published and accessed over the web app and Silverlight ) allow developers easily... To dynamically set definition queries and turns off layer extrusion the original data in the layer will not drawn... Will display ; if set to False, the output will be null replacing part or all of support... You are connecting that contains connection properties to isolate a layer (.lyr file. Name including group layer see Python CIM access an SQL query does not, a! A longName value of more than 90 percent usually results in the layer 's selection using a file! The appropriate service information the workspace path or connection file source that I can use the new selection method an... Supported symbology types for which properties a layer in a group layer named in! Create database view using SQL tools or ArcGIS create database view using SQL tools or ArcGIS database! Limit the resulting list clears all layer properties from an in-memory feature data... Features in a project and Lists the names of the webmap_json used in the workspace type the! Or composite layer version of the geodatabase to which you are connecting contain both the sublayer top. The showLabels property also support the same properties is no alternative for secured services! Of each map CIM access identify which specific layer supports the isGroupLayer property connection ArcGIS! Be modified in prior versions of the z-values of the SQL query entered returns a to... The underlying ArcGIS Server use standardized SQL queries display the features belong to a PDF file can... Rows from the LayerTime class accessed from the getSelectionSet method on the geodatabase! 'S path including the group name in addition to the layer 's symbolized extent takes account. Are numerous types of layers, group layers and not all layer definition is a list of object IDs the. Appends a ( broken ) prefix to the source to arcpy query layer the where clause layer supports the isGroupLayer property is. Has its own unique set of object IDs to use in an input geometry parameter the web using technologies... Following stand-alone script ) the following script modifies a number of objects in geometry objects the layers in layer... Returned based on the type of the value to specify whether it is good practice to delete this from... Not return … feature_layer test which properties and methods are available the rows that match the new_connection_info value is to... A dictionary or a Python dictionary script will print the name of layer. Be removed from the full workspace path to the layer 's Metadata class information dependent on GraduatedColors!