CREATE TABLE CREATE TRIGGER CREATE VIEW SELECT ON DBA_ROLES 添加可创建数据库对象的用户 您可以运行ArcGIS Desktop中的创建数据库用户工具或调用 Python 脚本工具来创建数据库用户,该用户可创建表、要素类、视图、触发器和序列。 要运行创建数据库用户工具,您必须以 Oracle 系统用户的身份连接到数据库。
Table change_tolerance (可选) 用于确定是否存在空间更改的距离。将根据此容差检查所有匹配的更新要素和基础要素。如果更新要素或基础要素有任意部分落在匹配的要素区域之外,则将其视为空间更改。距离可以等于或大于零。默认值为 0。当指定值大于零时,输出中将包括LEN_PCT和LEN_ABS字段。可以选择首选单位;默认为要素...
If the dialog box is moved off-screen, such as to a second monitor, and the map document is saved and closed, when the map is re-opened, this dialog box may not appear in the default position. Similarly, the position of this dialog box may change if the original monitor is replaced,...
In ArcCatalog, you highlight the table and view it using the Preview tab. The feature attribute table consists of fields (also known as columns or items). Each field represents one type of descriptive information. Each row (also known as a record) contains the attributes of one feature in ...
When attempting to create a cross tabulation of aggregated data using the ArcMap normalizing function, the math will work but the answer will not be what was intended. A proper cross tabulation requires data at the atomic (i.e., non- aggregated) level. With census data, this means working...
Sometimes, it is necessary to share the actual.mxd filewith others. Since .mxd file are merely pointers to the actual data and symbol sets, simply sharing the file with users that don’t have access to the network the map file was created on is not a workable option. ...
In the past, ArcGIS has had issues with printing directly from MXDs (File > Print). It was a bug that was always there just waiting to crash an unknowing victim’s computer. The bottom line is that MXD and printers are not the best of friends. It’s another one of those quirky Ar...
Click the Add Data button . Click the Look in arrow and navigate to the Excel workbook file (. xls). Double-click the Excel workbook file. Click the table you want to add to ArcMap. Click Add. What is ArcPy? ArcPy isa site-package that builds on(and is a successor to) the success...
by Anonymous User Not applicable I am developing a Python plugin that needs to get information about the currently selected layer in the ArcMap table of contents. I've looked through the arcpy.mapping module for an appropriate function and searched the internet but to no ...
Start ArcMap with a new empty map and add the data with the unknown coordinate system. The data must not have a defined coordinate system. For shapefiles, it must not have a PRJ file. Right-click the layer name in the table of contents, click Properties to open the Layer Properties ...