Supermap product problem solving experience accumulation

1. The dynamic projection setting causes the slicing image to crash. The
image is in a projected coordinate system. Configure the map as a geodetic coordinate system (dynamic projection)
to cut the map. At a larger scale, iserver and IDesktop will crash.
Later, after the image was projected and converted, "Dynamic Projection" was no longer used, and there was no problem in cutting the image!
2. The cache tile storage method causes crashes.
The current 8C version includes the 7.2beta version. When generating map cache, do not select the compact type. If it is a compact type, the product is easy to crash when browsing the generated cache map. This bug can only be solved in version 801.
3. Slope analysis and reclassification The
process is: topographic map correction→contour vectorization→elevation value assignment→DEM reconstruction→slope analysis→reclassification (two levels of 0-18; above 18)→raster to vector→screening Below 18 degrees (value=1)
4. Ask how to display multiple attributes of the data on the map through the label thematic map
When making the label thematic map, write an expression such as: "name:" || caoyuan.name || chr(10) || "Name:" caoyuan.huzhu || chr(10) || "Region:
"
|| After the desktop software 7C is opened and viewed, it cannot be opened with the 6r desktop again, and an error is reported: Failed to link the data source;                  
1. Know the coordinate information of each dataset in advance and back it up;
2. Execute the following statement in the database;         
update smregister set smprojectinfo = empty_blob() where dbms_lob.getlength(smprojectinfo) > 199;
update smimgregister set smprojectinfo = empty_blob() where dbms_lob.getlength(smprojectinfo) > 199;
update smdatasourceinfo set smprojectinfo = empty_blob() where dbms_lob.getlength(smprojectinfo ) > 199;
3. The data source can be opened in 6R, but the coordinate system needs to be reset;
ps: experience is still accumulating.....