SetHistogramTable report Errors? Help

Question

-- create a sdo_geor_histogram type table
sql> create table histtab of mdsys.sdo_geor_histogram;
-- Then insert cellvalue and count info into histtab in the format of sdo_geor_histogram
-- Last setHistogramTable with following procedure
declare
grobj sdo_georaster;
begin
select georaster into grobj from georaster_table where georid = 1 for update;
sdo_geor.setHistogramTable(grobj,0,'HISTTAB');
UPDATE georaster_table set georaster = grobj where georid = 1;
commit;
end;
-- I also tried to 1 for layernumber
all report following errors, experts here help to solve
ORA-13418: null or invalid parameter(s) for set functions
ORA-06512: at "MDSYS.SDO_GEORX", line 1259
ORA-06512: at "MDSYS.SDO_GEOR", line 2809
ORA-06512: at line 5
Thanks in advance.
Richard Lee

Answer 1

As a NOTE to avoid some confusion.
Unlike the SDO_GEORASTER and SDO_RASTER object data types, which are used for persistent storage (such as defining a table or column of such data types), other data types such as SDO_GEOR_HISTOGRAM, SDO_GEOR_COLORMAP, SDO_GEOR_GRAYSCALE, and SDO_GEOR_SRS object type are only used in the GeoRaster PL/SQL API and are defined for programming or operations in the current release.
Functions like setBinTable, getBinTable, getHistogramTbale, setHistogramTable, setGrayScaleTable, getGrayScaleTable, setColorMapTable, and getColorMapTable allow users to register table names for the related external tables (other than storing the data of such tables in the GeoRaster XML metadata). However those external tables are not defined and cannot be manipulated by GeoRaster in the current release.
And so, in SDO_GEOR.validateGeoRaster(), all external tables, which are registered through their table names in the XML metadata, such as GCP table, BIN table, histogram table, grayscale table, and colormap table, are not checked.
Jeffrey