Data Export

Feature Description

The data export function is used to export data from SuperMap iDesktopX to common formats, including ArcGIS format, CAD format, MapInfo format, FileGDB format, telecommunications format, and other 20 common data formats. This facilitates data sharing and collaboration in related third-party software without barriers.

For supported export formats, please refer to the Supported Formats for Data Import/Export page.

Function Entry

Start tab > Data Processing dropdown menu > Data Export.
In the workspace manager, right-click a dataset or data source > Export Dataset from the context menu.

Steps

Click the Start tab > Data Processing dropdown menu > Data Export button to open the Data Export dialog.
Click the Add button on the toolbar, or double-click a Dataset cell in the list. In the Select dialog that appears, the left panel lists all data sources in the current workspace, and the right panel lists the names and types of all datasets under the selected data source. You can select one or more datasets and click OK to add the files to be exported from the current workspace to the data list.
All added data will be displayed in the list box on the left side of the Data Export dialog. Users can use the toolbar above the list to add, remove datasets, or batch modify export dataset properties. The list box is described as follows:
- Dataset: Displays the name of the dataset to be exported.
- Export Type: The system will automatically identify the export type format based on the selected dataset type. You can also click the drop-down button of the Export Type item and select another data format from the dropdown list.
- Result File: The exported file name, which is the same as the dataset name by default. You can also rename the exported file by double-clicking this column: select the dataset to be renamed, click the Result File item or press the F2 key on the keyboard, and the result file becomes editable. You can then enter a new file name as the exported file name.
- Export Path: This item shows the default path for data export. Users can also change the export path of a dataset: select the dataset whose export path you want to modify, double-click the Export Path item, and in the Browse Folder window that pops up, change the export path of the dataset. Note: If the exported path does not exist, the program will automatically create the destination folder.
- Overwrite: This checkbox sets whether to overwrite an existing file with the same name under the export path. If checked, existing files with the same name will be overwritten; if unchecked, the file will not be exported.
- Status: Before data is exported, the State item shows Unconverted; if the data is successfully exported, it shows Succeed; if the data fails to export, it shows Failed.
Users can select one or more files in the list box and set various parameters for the exported data in the parameters area on the right side of the Data Export dialog. Depending on the selected data format, the configurable parameter items in the right parameters area may differ:
- Export Vector Data: Including export to vector data such as shp, csv, dwg, Excel, etc. The parameters to be set are as follows (the settable parameters may vary for different vector export types; the actual operation shall prevail):
  - Export Point as WKT: Only available when exporting to CSV. This checkbox is used to display or set whether to export point as a WKT field.
  - Export Header: Only available when exporting to CSV. This checkbox is used to display or set whether to export the header information of the file.
  - Export Extended Field: Only available when exporting to AutoCAD files. This checkbox is used to display or set whether to export the extended fields of the AutoCAD file.
  - Export Extension Records: Only available when exporting to AutoCAD files. This checkbox is used to display or set whether to export the extension records of the AutoCAD file.
  - Export Borders: Only available when exporting to AutoCAD files. This checkbox is used to display or set whether to export the border data of the AutoCAD file.
  - Export Line Width: Only available when exporting to AutoCAD files. This checkbox is used to display or set whether to export the polyline width data in the AutoCAD file.
  - Object Color by Layer: Only available when exporting AutoCAD files. If selected, the color characteristics of all objects will be uniformly set to bylayer after export. All objects under the same layer will have consistent colors. If the objects under the same layer have inconsistent colors, after export, the color of the same layer will be consistent with the color of the first object in the original layer. If not selected, the exported object color follows the color configured in the current desktop map.
  - Text field length is consistent with source data: Only available when exporting ArcGIS Shapefile files. This checkbox is used to set the text field length when exporting ArcGIS Shapefile files. If selected, the exported text field length is consistent with the source data. If the field value exceeds the length limit, the excess part will be automatically truncated. If not selected, the exported field length will be automatically adjusted based on the actual maximum length of all field values. This is the default option.
  - CAD Version: Only available when exporting AutoCAD files. The dropdown list on the right side of this label allows you to select the version of the exported AutoCAD DWG file (*.dwg) or AutoCAD DXF file (*.dxf). Currently supports AutoCAD R12, AutoCAD R13, AutoCAD R14, AutoCAD 2000, AutoCAD 2004, AutoCAD 2007. The default export version is AutoCAD 2013.
  - Style Mapping File: Only available when exporting AutoCAD files. You can choose whether to export the style mapping file. For descriptions of the style mapping file, please refer to the relevant description in Import CAD Data.
  - Charset: The character encoding type used for exporting the dataset. To ensure the dataset is displayed correctly, an appropriate charset must be used. For export, the default charset is ASCII (Default). The most common ASCII charset is used for displaying Roman numerals and letters, utf-8 is used for displaying simplified Chinese characters, and to meet cross-language and cross-platform computer display needs, the Unicode charset is used. For the list of charsets supported by the application, please refer to Charset List.
  - Filter Expression: By setting a filter expression, you can filter out objects that do not need to be exported, so that only objects meeting the conditions participate in the export. For how to use SQL expressions, please refer to SQL Expression.
  - Dataset List: When exporting to AutoCAD files, you can select the datasets to be exported, supporting exporting multiple datasets into a single DWG/DXF file.
- Export China Standard Vector Exchange Format:
  - VCT Version: Select the VCT export version. Provides three options: cnsdtf_vct 1.0, landuse_vct 2.0, landuse_vct 3.0.
  - VCT Layer: Select a dataset as the VCT layer. Provides Config File and Custom methods to configure the VCT layer:
    - Config File: Import an existing configuration file to configure the exported dataset.
    - Custom: The configuration parameters vary for different VCT versions. For details, please refer to the description in Export VCT Data.
  - Charset: The character encoding type used for exporting the dataset. To ensure the dataset is displayed correctly, an appropriate charset must be used. For export, the default charset is ASCII (Default). The most common ASCII charset is used for displaying Roman numerals and letters, utf-8 is used for displaying simplified Chinese characters, and to meet cross-language and cross-platform computer display needs, the Unicode charset is used. For the list of charsets supported by the application, please refer to Charset List.
- Export Telecommunications File:
  - Dataset List: Select datasets of the corresponding type (point, line, polygon) based on the exported telecommunications file type. Multiple selections are allowed.
  - Field: Only available when exporting to Telecom Vector Text.
  - Charset: The character encoding type used for exporting the dataset. To ensure the dataset is displayed correctly, an appropriate charset must be used. For export, the default charset is ASCII (Default). The most common ASCII charset is used for displaying Roman numerals and letters, utf-8 is used for displaying simplified Chinese characters, and to meet cross-language and cross-platform computer display needs, the Unicode charset is used. For the list of charsets supported by the application, please refer to Charset List.
  - Filter Expression: By setting a filter expression, you can filter out objects that do not need to be exported, so that only objects meeting the conditions participate in the export. For how to use SQL expressions, please refer to SQL Expression.
- Export File GeoDatabase Vector File (FileGDB):
  - Dataset List: Select the datasets to export. Multiple selections are allowed.
    - When the exported datasets are grouped, because the FileGDB data structure does not support subgroups, subgroups and their datasets are not exported by default, only datasets under the parent group are displayed.
    - If you need to export subgroups, you can use the Add button above to add the datasets from the subgroups to the list. After export, the subgroups will lose their hierarchical relationship with the parent group and will be in a parallel relationship.
  - Append: Using the append function, you can append the currently selected export data to an existing File GDB file. You need to set the connection field for appending.
  - Charset: The character encoding type used for exporting the dataset. To ensure the dataset is displayed correctly, an appropriate charset must be used. For export, the default charset is ASCII (Default). The most common ASCII charset is used for displaying Roman numerals and letters, utf-8 is used for displaying simplified Chinese characters, and to meet cross-language and cross-platform computer display needs, the Unicode charset is used. For the list of charsets supported by the application, please refer to Charset List.
  - Retain Grouping: Provides the option to retain grouping. If checked, the dataset group is retained after exporting to a File GDB file; otherwise, it is not retained.
    Notes:
    Because the Feature Dataset under GDB has restrictions such as dataset type and coordinate system, to ensure the complete export of datasets under the dataset group, the datasets under the dataset group must meet the following conditions:
    
    The dataset type under the dataset group must only be 2D/3D point, line, or region datasets. Tabular datasets will not be retained in the group after export. Other datasets are not supported for export to FileGDB.
    
    All datasets under the dataset group must have the same coordinate system. If the coordinate systems are inconsistent, only datasets with the same coordinate system as the first dataset will be exported.
    
    The dataset group hierarchy under the current data source must only have one level besides the root group, i.e., there is no group nesting within the dataset group.
  - Preserve 64-bit integer field format: Used to specify whether to preserve the 64-bit integer field format during export. If selected, the original format of the long field will be preserved, and the exported data can be used in ArcGIS Pro 3.2 and above; if not selected, the long field will be exported as double precision.
  - Filter Expression: By setting a filter expression, you can filter out objects that do not need to be exported, so that only objects meeting the conditions participate in the export. For how to use SQL expressions, please refer to SQL Expression.
- Export Personal GeoDatabase Vector File:
  - Dataset List: Select the datasets to export. Multiple selections are allowed.
  - Filter Expression: By setting a filter expression, you can filter out objects that do not need to be exported, so that only objects meeting the conditions participate in the export. For how to use SQL expressions, please refer to SQL Expression.
- Export GJB File:
  - Dataset List: Select the datasets to export. Multiple selections are allowed.
  - Charset: The character encoding type used for exporting the dataset. To ensure the dataset is displayed correctly, an appropriate charset must be used. For export, the default charset is ASCII (Default). The most common ASCII charset is used for displaying Roman numerals and letters, utf-8 is used for displaying simplified Chinese characters, and to meet cross-language and cross-platform computer display needs, the Unicode charset is used. For the list of charsets supported by the application, please refer to Charset List.
  - Export Layer Type: The supported layer information includes Measurement Control Point, Industrial and Agricultural Social and Cultural Facilities, Residential Area and Ancillary Facilities, Land Transportation, Pipeline, Water/Land, Submarine Geomorphology and Geology, Reef/Shipwreck/Obstacle, etc. The default is Measurement Control Point.
  - Filter Expression: By setting a filter expression, you can filter out objects that do not need to be exported, so that only objects meeting the conditions participate in the export. For how to use SQL expressions, please refer to SQL Expression.
- Export to Raster or Image Dataset:
  - Compression Method: When the export type is TIFF File, you can set the compression method for the exported file. Provides four compression methods: None, LZW, JPEG, DEFLATE.
    - None: No compression.
    - LZW: Lossless compression, using an advanced string table compression to improve the compression efficiency of image files.
    - JPEG: Lossy compression, based on the DCT discrete cosine transform compression algorithm, with a high compression ratio. The JPEG compression algorithm can only be used for unsigned 8-bit integer raster data (one or multiple bands) and can be applied to the first 12 bits of 16-bit data.
    - DEFLATE: Lossless compression, a lossless data compression algorithm that uses both the LZ77 algorithm and Huffman coding.
  - Compression Ratio (%): This item is used to display or set the compression ratio for image files. The default compression ratio is 75%. This item is only available when the export file format is JPG File (*.jpg).
  - Coordinate Reference File: Click the Select button on the right to open the Open dialog, where you can set the path of the coordinate reference file for the currently selected raster dataset or the image dataset to be exported. This item is only available when the export file format is JPG File (*.jpg), PNG File (*.png), Bitmap File (*.bmp), or GIF File (*.gif).
  - Export Affine Information to tfw File: This checkbox is used to display or set whether to export affine transformation information (mapping between image coordinates and geographic coordinates) to an external file. This checkbox is only available when the export file format is TIFF (*.tif). It is checked by default, meaning the affine information is exported to an external tfw file; otherwise, the projection is exported to the TIFF file.
  Notes:
  - When exporting an image dataset to JPG File (*.jpg), the width or height of the JPG file cannot exceed 65500 pixels. There is no such limit when exporting to PNG File (*.png).
Check the Close dialog automatically after export checkbox to control whether the dialog is automatically closed when the data export ends. Checked by default.
Click the Export button. The system will batch export all datasets in the list box. The Export Progress window will display the overall progress of batch exporting all data in the list box, as well as the export progress of the individual dataset currently being exported.

Notes:

If all data sources in the current workspace are image data engines, the Export button will be grayed out and unavailable.
If the current workspace contains an image data engine, when you click the Add button in the Data Export window, the image data engine will appear in the list of data sources on the left side of the Select dialog, but you cannot add image datasets under that data source.
When exporting KML and KMZ format datasets, they must be in the WGS_1984 geographic coordinate system; otherwise, the export will fail.
When exporting vector data to VCT files, the corresponding layer type for VCT must be set; otherwise, the export will fail.
When importing/exporting telecommunications raster data, pay attention to the following two points:
- The telecommunications raster format only supports Grid-type datasets for import/export.
- The telecommunications raster format only supports import/export of raster data with a pixel bit depth of 16. When exporting data that is a Grid dataset with a pixel bit depth lower than 16, automatic pixel bit depth conversion will be performed, uniformly converting it to 16 bits.
When exporting dataset property tables to Microsoft Excel File, currently only supports exporting no more than 100,000 records at a time. If the dataset has 0 records, the export will fail.
uses third-party TIF libraries, currently supporting a maximum data volume of 4G for exporting as TIFF images. If the export data exceeds 4G, it is recommended to split the data by block cropping for export, or export in SIT Image File (deprecated) format.
Due to third-party library limitations, the current maximum data volume for exporting to SHP files is 4G. If the export data exceeds 4G, it is recommended to export the data as FileGDB files.
The field names in SHP files are stored based on the DBF specification, with a maximum field length of 10 bytes (not characters). If the field name exceeds this limit during export, it will be automatically truncated. For example, the English field name "Population2025" will be truncated to "Population", and the Chinese field name "行政区名称" will be truncated to "行政区" (UTF-8, one Chinese character occupies 3 bytes). If the truncated names are duplicated, a sequence number will be automatically appended (e.g., "Populati_1", "Populati_2") to avoid conflicts. Therefore, please confirm the field name length before exporting SHP, and it is recommended to rename fields in advance to shorten them to within 10 bytes.

Feature Description

Function Entry

Steps

Related Topics