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Minor obscure error message [message #91815]

Tue, 01 September 2015 12:12

wlandsman
Messages: 743
Registered: June 2000

Senior Member

Suppose one wants to write !p.thick=2 but forgets the equals sign

IDL> !p.thick2
% Tag name THICK2 is undefined for structure !PLT.
% Execution halted at: $MAIN$

and one gets a very logical error message.

But if one precedes this with the syntactically correct statement !p.background=0

IDL> !p.background=0 & !p.thick2
% Object reference type required in this context: <STRUCT Array[1]>.
% Execution halted at: $MAIN$

one gets an obscure reference about requiring an object type. I'm not sure how IDL is getting confused here. It only happens when the two statements are on the same line.

IDL> print,!version
{ x86_64 linux unix linux 8.4 Sep 27 2014 64 64}

--Wayne

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[Message index]

		Minor obscure error message By: wlandsman on Tue, 01 September 2015 12:12
		Re: Minor obscure error message By: Dick Jackson on Tue, 01 September 2015 14:50
		Re: Minor obscure error message By: wlandsman on Tue, 01 September 2015 19:01
		Re: Minor obscure error message By: Yngvar Larsen on Wed, 02 September 2015 00:36

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