způsobuje označený kód ve fórech vkládání mezer do textu?

Question

Všiml jsem si, že když ve fórech použijete tag pro kód, někdy se do označeného kódu náhodně vkládají mezery. Nemyslím si, že je to chyba uživatele, protože jsem to viděl více než několikrát. Například příspěvek zde: http://forums.arcgis.com/threads/9559-Python-if-...-then-Statement obsahuje: Contours = "\\Atlas\data\geodata\state\contour\arc " Crossings = "\\Atlas\data\geodata\state\crossings\a rc" Contour = "Contour.shp" Crossing = "Crossing.shp" P_L = "C:\Daves_Stuff\ArcPad_Data\Standard_Layers\La mberts_Projection\Pts_Lines" Clip_Feature = "C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Clip_Feature\Clip_Feature.shp" Všiml jsem si tohoto podivného umístění náhodných mezer v tagovaných kódech i v několika dalších příspěvcích, například: http://forums.arcgis.com/threads/9512-Rectangle-for-Clip_management-tool-in-arcpy Kód s náhodně vloženými mezerami je špatný... P.S. Zajímavé je, že když jsem psal tuto zprávu, poslední řádek Python kódu výše neobsahoval žádné mezery, ale při náhledu se tam objevila mezera ve slově "Cl ip". Tato mezera tam při psaní nebyla - viz přiložený screenshot jako důkaz. Zdá se, že to není ovlivněno jen označeným kódem? Možná je to další příznak používání IE8?

ChrisSnyder · Answer

Jim,

That test looks fine to me (no random spaces). Seems like the issue is when users paste text into the message body. My assertion that it was the code tag was wrong. Must be a dyslexic day toady...

Anonymous User · Answer

Original User: jbarry

Thanks Chris.

I'll test a few things, browsers, versions, line lengths, etc. and see if I can figure this out.   Of course we shouldn't be adding or removing extra spaces or characters, etc.

Until then, at least for code samples, you might like using the CODE blocks for this.  (Tool button on the text editor with the # symbol on it.)

For example, does this below look ok to you?

%%%%%%%%%%
%    TEST BELOW
%%%%%%%%%%

In your script does the first line restrict the loop to only the reference layer? I need the If statement to look at the referred layer only as there is a master layer in the same directory that would have 'Murray Inland'. This script is part of a geoprocessor model where the 'clip feature' is derived from user input. I have also noticed the 'while' loop significantly increases processing time. Could a 'for' loop be used instead of 'while'?

The loop I'm attempting is:
fieldname = "Region"
gp.workspace = "C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Clip_Feature"
shp = gp.ListFeatureClasses()
for shp in shp:
if fieldname == 'Murray Inland':
gp.Delete_management("C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Lamberts_Projection\Pts_Lines\Contour.shp")

This loop has the problem of not being specific to the 'clip feature' layer and also looks at the master layer.

I have attempted to run the supplied while loop script which executes successfully but gives an error that the contour layer does not exist.

My complete script is shown below:
import sys, string, os, arcgisscripting
gp = arcgisscripting.create(9.3)

Contours = "\\Atlas\data\geodata\state\contour\arc "
Crossings = "\\Atlas\data\geodata\state\crossings\arc"
Contour = "Contour.shp"
Crossing = "Crossing.shp"
P_L = "C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Lamberts_Projection\Pts_Lines"
Clip_Feature = "C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Clip_Feature\Clip_Feature.shp"

gp.FeatureClassToFeatureClass_conversion(Contours, P_L, Contour, "")
gp.FeatureClassToFeatureClass_conversion(Crossings , P_L, Crossing, "")

gp.workspace = "C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Clip_Feature"
scursor=gp.SearchCursor(Clip_Feature)
row=scursor.Next()
while row:
if row.GetValue("Region") == 'Murray Inland':
gp.Delete_management("C:\Daves_Stuff\ArcPad_Data\Standard_Layers\Lamberts_Projection\Pts_Lines\Contour.shp")
del scursor

ChrisSnyder · Answer

Woops, I guess it's not the tagged code at all, just the raw text that is affected. Anyway, it's weird that there are spaces! Maybe something to do with the line wrapping?