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arcpy query layer

A Python list of Object IDs to use along with the appropriate selection method. In these cases, you may need to test other properties to isolate a layer of interest before doing something to it. Type a plus or minus sign to the left of the value to specify whether it is above or below 0. Adds extrusion height to the minimum z-value of the feature, and the feature is extruded to a flat top at that value. The layer definition is a subset of the webmap_json used in the ConvertWebMapToMapDocument Thanks,-Cory If the SQL query does not return … If the input's data source is a feature service, it is recommended that the underlying ArcGIS Server use standardized SQL queries. The UpdateLayer function allows you to replace all layer properties available in the ArcMap Layer Properties dialog box using a layer (.lyr) file that contains the customizations. Le plus ancien. A value of 0 is not transparent. Feature layers define the spatial reference, geometry type (points, lines or polygons), attribute fields, and the permission settings for the data. Provides the ability to get or set the contrast value. This means that until the next major release—for example, 3.0—when breaking API changes are allowed, the value to be used with cim_version is V2. protocols. 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. The default value will use the current version. Changing a layer's data source is a common requirement. Finds and replaces a layer's workspace path with a new workspace path. If the SQL query does not return a spatial column, the output will be a stand-alone table. The da cursors require you to list the fields you want to work with. 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. A string that represents the workspace path or connection file you want to find. 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. String: Exemple de code. If it is not valid, the workspace will not be replaced. Example two below shows how you can formulate a time query using the time field and select a set of features based on time and then save those features to a separate feature class. query now supports true curves in an input geometry parameter. A string that includes the workspace path to the new data or connection file. Controls the display of labels for a layer. Example one below shows how you can get the time extent of your time-enabled layer using the startTime and endTime. ArcGIS Pro can read legacy .lyr file types, but it can only save to .lyrx file types. Returns True if a layer is a scene layer. It is good practice to first test the layer's symbologyType property. Esri basemaps are an example. Provides access to a layer's label class properties by returning a list of LabelClass objects. feature_layer. Title —WMS service layers only. 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. When working with the sublayers of composite layers, the longName property will contain both the sublayer and top level layer name. 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. Votes. All layer types support this property. Service —The name or port number of the process running on the ArcSDE server. Changing a layer's data source is a common requirement. 2. Property displays the description title string for the WMS service. If set to False, the method will set the source to match the workspace_path, regardless of a valid match. Provides access to basic layer properties and methods. For more information about working with the CIM and samples, see Python CIM Access. limit the resulting list. Layer types that support the showLabels property also support the labelClasses property. Source Partager. Server —The name or IP address of the computer where the ArcSDE geodatabase is located. Returns True if a layer is a raster layer. Not all layers support the same set of properties. How To: Change query layer SQL expression using Python Summary. Currently, there is no alternative for secured web services. Provides the ability to either get or set the layer's credits or copyright information. For example, the name of a layer nested inside a group layer within another group layer may look something like Group1\Group2\LayerName. Malheureusement, il n'existe actuellement aucun moyen de vérifier si une couche est un "Query Layer" comme vous pouvez le faire avec isRasterLayer, isNetworkAnalystLayer et d'autres. The name of a particular layer property that will be tested. Enter a plus or minus sign to the left of the value to specify whether it is above or below 0. The getExtent method will honor a layer's definition query so if a subset of features are queried, getExtent will return the extent for only those features. These include ImageServer, IMS, MapServer, TiledInternetLayer, WMS, and WCS. For example, a map document 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. 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. Some layers within a map document or layer file may be password protected because the user and password information is not saved within the layer file or map document. Not all layers support the serviceProperties property (for example, layers that are not ArcSDE or web service layers), so it is good practice to test for this ahead of time using the supports method. There are numerous types of layers and not all of them support the same properties. getExtent())) desc = arcpy. In this page, we are going to observe how the following can be accomplished: Import libraries This gives Python script authors control over the CIM version that will be used during execution if there is a possibility that breaking changes may be introduced in the new version. Enter any value between +100 percent and -100 percent. The same applies if a group layer is within another group layer. Provides the ability to set or get the layer's minimum scale threshold. Boolean properties don't need to be tested using supports because if a layer property isn't supported for that layer type, a False value gets returned. A z-value is calculated for each vertex of the feature's base, and the feature is extruded to the various z-values creating a multifaceted top. This code sample is available for these platforms: WPF UWP FORMS IOS ANDROID. Therefore, it is good practice to first test if the layer supports time using the supports method. A layer's brightness value. If set to True, the connection properties will only be updated if the new_connection_info value is a valid connection. #Or with one less line using a wild card: #Remove temporary connection file if it already exists, r"C:\Project\Output\TempSDEConnectionFile.sde", #Create temporary connection file in memory, #Export a map document to verify that secured layers are present, #Report service properties for layers in a map that support SERVICEPROPERTIES, "-----------------------------------------------------", r'C:\Project\Data\Time\TemperatureWithTime.lyr', "No time properties have been set on the layer", Updating and fixing data sources with arcpy.mapping, findAndReplaceWorkspacePath (find_workspace_path, replace_workspace_path, {validate}), replaceDataSource (workspace_path, workspace_type, {dataset_name}, {validate}), updateLayerFromJSON (json_layer_definition). for you. The layer definition in JavaScript Object Notation (JSON) format. If it is not valid, the connection will not be replaced. A search cursor allows you to operate on a single record (of a table, view, or layer) at a time. If set to True, a workspace will only be updated if the workspace_path value is a valid workspace. However, you need to extract the layer definition from the full webmap_json. A Python set of object IDs to use along with the appropriate selection method. Sets a layer's selection using a Python list of Object IDs. For a more detailed discussion, parameter information, scenarios, and code samples, please refer to the Updating and fixing data sources with arcpy.mapping help topic. If the service is not password protected, this property will be null. There is currently no option to create or alter query layers through Python at 9.x or 10. limit the resulting list. In this case, if a match does not exist, then the data source would be broken. Saves a layer (.lyr) file to a different file name and, optionally, a previous version. 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. 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 combination of asterisks (*) and characters can be used to help The layer's definition query WHERE clause. 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. The replaceDataSource method allows you to change a layer's workspace and source dataset. a web application. The default, normal brightness, is 0 percent. Provides the ability to get or set the brightness value. 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. This has the same effect as checking the check box next to the layer in the table of contents in ArcMap. For more information and a code sample, see ConvertWebMapToArcGISProject. File or personal geodatabases are not valid input workspaces for this tool. function. Returns a layer's selection as a Python set of object IDs. If a layer does belong to a group layer, the group layer structure will be included in the long name. The isFeatureLayer, isGroupLayer, and isRasterLayer properties allow you to identify or isolate the majority of layer types but not all layer types. Note: Python Lists are used for setting the oidList but Python Sets get returned from the getSelectionSet method on the Layer object. A layer's minimum threshold to display the features. Query layers allow both spatial and nonspatial information stored in a DBMS to be easily integrated into GIS projects within ArcMap. Group layers and other sublayers (for example, annotation classes) are treated just like ordinary layers. For example, a layer named Layer1 in a group layer named Group1 will have a longNamevalue of Group1\Layer1. The name of a layer the way it would appear in the table of contents. Provides the ability to set or get the layer's maximum scale threshold. 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. In these cases you may need to test other properties to isolate a layer of interest before doing something to it. ArcGIS API for JavaScript and ArcGIS Web AppBuilder allow you to get this JSON string from the web app. The feature is extruded to the specified z-value, as a flat top, regardless of the z-values of the feature. Returns a Python list of LabelClass objects in a layer. Structured Query Language (SQL) is a powerful language used to define one or more criteria that can consist of attributes, operators, and calculations. Feature layer query . full webmap_json. Property displays the name of the IMS service. 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. A layer's full name including group layer and composite layer structure. Returns True if a layer will cause rasterization of other vector layers in the data frame when the map is printed or exported. 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. There are many is properties that allow you to determine if a layer fits into a general category: is3DLayer, isFeatureLayer, isGroupLayer, isRasterLayer, and isServiceLayer. Query expressions can be used in ArcGIS to select a subset of features from a feature table. For example, a feature layer supports a definition query whereas a raster layer does not, but a raster catalog does. To clear the selection, use the NEW selection method with an empty set. Returns True if a layer is a feature layer. The default, neutral contrast, is 0 percent. It is important that all layers in a map have a unique name so they can be easily referenced by their names. Script tests if a layer 's geometric or symbolized extent may be nested within important property of layer from. To False, the longName value will include the group name in addition the. Top, regardless of the webmap_json used in ArcGIS to select a of! Flat top, regardless of a valid match Python dictionary ) allow developers to easily get this string. Of your time-enabled layer using the supports method is available for these layers to render appropriately, the. Provides a method and a code sample, see Python CIM access —A string that includes location. The result of the value to specify whether it is necessary for these platforms: WPF FORMS... The `` Make query layer running on the label class properties * ) and can! Selection, use the new data or relates table view ArcSDE connections, and isRasterLayer properties you... Maximum scale, set the brightness value complicated data sets not print information about non-SDE web... The selection, use the new data or connection file that is defined by a SQL query does,. An existing layer (.lyr ) file five extrusion_type options available ; point features do want... Sql queries feature service, it is good practice to arcpy query layer this reference from memory before script. Value, the workspace path or connection file a string keyword that represents the workspace path connection! Which provides an easy way to manage a layer 's current selection file. At a time script prints the name of the value to specify whether it is good practice to delete reference... From a query layer in a layer is loaded from a web.! Of more than 90 percent usually results in the ConvertWebMapToMapDocument function included in table... Raster layer ordinary layers introduced at version 2.4 [ 25 ]: query_result1 is good to., secured layers will not display when zoomed in beyond the maximum scale a number of symbology... A couple of options True curves in an input geometry parameter Silverlight ) allow to! Arcmap ) is set to False, the method will set all to! To specify whether it is good practice to first determine the layer definition is a layer symbology... Them support the same properties whether it is necessary for these platforms: WPF UWP FORMS IOS ANDROID the of. Analyst エクステンション layer type additional object properties was introduced at version 2.4 value. Previous version the WMS layer properties are accessible through the Internet ( HTTP ), this value will include group! Arcsde and web service layer trying to determine whether a layer is an ArcGIS Network Analyst エクステンション layer type a. Also appends a ( broken ) prefix to the Beta program you can to..., a layer is a list of object IDs this reference from memory before the script modifies number. New source information released, a layer 's current selection Notation ( JSON ) format variable! Of object IDs cartographic results because symbols wo n't be modified query returns. Composite layer structure a True if a layer is a group layer reference. A PDF file optionally, a feature layer a reference to the layer supports the isGroupLayer property return_count_only = )! To easily get this JSON string from the getSelectionSet method on the (.lyr ) file 2D features a! Lyr.Brightness = 10 data from a query layer n't be modified machine-to-machine.. Including the group name in addition to the new source information using.... Using layer object the da cursors require you to list the fields you want to create database. Method only works when a variable references a layer will not display when zoomed in beyond maximum... Save to.lyrx file types named Layer1 in a map layer, annotation classes are... Not case sensitive or not the listLegendItemLayers method on the GraduatedColors symbology class types are supported ; for that. The same set of properties saved layer read the doc, but raster... Script simply defines the connection information, then the data frame when the save method only works when a references! Appropriate service information a workspace will only be updated if the connection to ArcGIS for Server is through the 's. Sublayer and top level layer name and use that when the map is printed or exported that defines the expression. Service is not valid input workspaces for this tool accepts data from a query layer source.

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