ArcGIS Pro scripting tool (10) -- generate.Stylx style symbols from layers

The reason for making this tool is , Want to make a Xiangyuan controlled land color .stylx file .

But there are too many types of land in Xiangyuan , As shown in the figure below , fully 110 class . So many colored face symbols , One by one .stylx Don't be tired in the document ？

Fortunately Pro Yes CAD File support is better , We load directly CAD Of Polygon To Pro in ,Polygon It has been divided into layers , And the color is also similar to CAD In the agreement （ Check carefully CAD And Pro Of the same layer in RGB Color , You can still find RGB There are some differences in value , But the color is roughly right , It is not clear whether there is any way to maintain complete consistency . In the diagram above Pro The color of the land in the interface is light , Because Pro Automatically for all CAD Surface layer added 50% Transparency , This is also what needs to be handled in the next steps ）.

One 、Pro Cancel CAD Layer transparency

To be in Pro Manually cancel this 110 individual CAD The transparency of layers is also a matter good fortune ... Trouble , Fortunately, I have figured out how to modify the code before .

ArcGIS Pro Scripting tools （6）—— Repair CAD Layer data source _ Science GIS The blog of -CSDN Blog _arcgis Scripting tools Pro Yes CAD File support is obviously better than ArcMap. Although they will CAD Identify points 、 Line 、 Noodles 、 Polyhedron and notes 5 Categories: , But when we drag one of the classes to Pro In the middle of the day ,Pro Automatically display it in layers , And the color of the layer is the same as CAD Agreement .nice！ But the embarrassment is , once CAD File moved location or changed name , It's a long list of red exclamation point warnings . Experienced users may expect to repair a layer after , Other layers are automatically repaired , But it's a pity that this is not for these CAD Invalid layer . I'll put it off again CAD Just come in ？ Maybe not , Because it's already in Pro The symbol system of some layers has been changed in , Drag again CAD Come in, you have to redo many layer symbols https://blog.csdn.net/baidu_28157641/article/details/125480952 After using the format face layer tool to cancel transparency , The comparison diagram before and after the color block of urban planning land is as follows .

  Two 、Pro New China .stylx The style file

Can be built .stylx The style file , You can also use existing .stylx The style file （ If you use an existing style file , Please judge first CAD Whether the name will appear after the layer symbol is added 、 Key value conflict ）.

In order to CAD Surface layer symbols are written .stylx The style file , We need to be right about .stylx Have a basic understanding of ..stylx It's actually a SQLite database , We can use Navicat To connect 、 see .

Database ITEMS The table records the ID、CLASS（ spot 、 Line 、 Surface, etc. ）、CATEGORY（ classification ）、NAME、TAGS（ label ）、CONTENT（json character string ）、KEY（ Key value ）. except ID Outside , Other attributes of symbols can be found in Pro View and modify .

To learn Python Intermediate reading and writing SQLite The syntax of the database , We can go to .stylx The style file writes symbols .

sqlite3 --- SQLite database DB-API 2.0 Interface module — Python 3.7.13 file https://docs.python.org/zh-cn/3.7/library/sqlite3.html

3、 ... and 、 To write Python、 Scripting tools

The main processing flow of the script is ： First read each CAD The name of the layer 、 Symbol , Then write this information to .stylx The style file （SQLite database ） in .CAD Layer names use ArcPy You can get , To obtain layer symbols, you need to use Python CIM, Because it can directly obtain writable CONTENT Attribute json character string .

Python Script

import arcpy
import sqlite3

aprx = arcpy.mp.ArcGISProject(r"CURRENT")
m = aprx.activeMap
groupLayer = arcpy.GetParameterAsText(0)
lyrs = m.listLayers()

stylx_path = arcpy.GetParameterAsText(1)

stylxDB = sqlite3.connect(stylx_path)

cursor = stylxDB.cursor()

category_switch = {4: " First class ",
                   5: " Second class ",
                   6: " Third class ", }

class_switch = {"Point": 3,
                "Polyline": 4,
                "Polygon": 5}


for lyr in lyrs:
    longName = lyr.longName
    if longName.startswith(groupLayer) and lyr.isGroupLayer == False:
        type = arcpy.Describe(lyr).featureClass.shapeType
        classValue = class_switch.get(type)

        sym = lyr.symbology
        if sym.renderer.type == 'SimpleRenderer':
            try:
                cim = lyr.getDefinition("V2").renderer.symbol.symbol
                content = arcpy.cim.GetJSONForCIMObject(cim, "V2")
                name = lyr.name
                key = lyr.name
                category = category_switch.get(len(name))

                new_row = (classValue, category, name, content, key)

                cursor.execute(
                    'INSERT INTO ITEMS(CLASS, CATEGORY, NAME, CONTENT, KEY) VALUES(?,?,?,?)', new_row)

                stylxDB.commit()
                arcpy.AddMessage("√ "+lyr.name)
            except:
                arcpy.AddMessage("× "+lyr.name)

stylxDB.close()

Parameter setting

Effect demonstration

Tool description

1. Only for ArcGIS Pro
2. Before running the tool , Please switch to map view
3. This tool can generate points in batch 、 Line 、 Noodles 3 Types of style symbols