like in ticket #2643 where shape type 50 PGeodatabases are not recognized, 51 seems to be the same issue

[jesper247]

When reading an ESRI Personal geodatabase, the sometimes a shapetype 51 appears.

by using the same approach as in #2643 for determining what type of geometry this is, it turned out to be the same beast: A polygon with CircularArc-segments mixed with Line segments.

<RingArray xsi:type="esri:ArrayOfRing">
 <Ring xsi:type="esri:Ring">
 <SegmentArray xsi:type="esri:ArrayOfSegment">
 <Segment xsi:type="esri:Line">
 <FromPoint xsi:type="esri:PointN">
  <X>2754081.67923976</X> 
  <Y>127489.030517839</Y> 
  </FromPoint>
 <ToPoint xsi:type="esri:PointN">
  <X>2754228.96143305</X> 
  <Y>127489.052789288</Y> 
  </ToPoint>
  </Segment>
 <Segment xsi:type="esri:Line">
 <FromPoint xsi:type="esri:PointN">
  <X>2754228.96143305</X> 
  <Y>127489.052789288</Y> 
  </FromPoint>
 <ToPoint xsi:type="esri:PointN">
  <X>2754229.17293284</X> 
  <Y>127328.719448313</Y> 
  </ToPoint>
  </Segment>
 <Segment xsi:type="esri:Line">
 <FromPoint xsi:type="esri:PointN">
  <X>2754229.17293284</X> 
  <Y>127328.719448313</Y> 
  </FromPoint>
 <ToPoint xsi:type="esri:PointN">
  <X>2754128.54136811</X> 
  <Y>127331.741810211</Y> 
  </ToPoint>
  </Segment>
 <Segment xsi:type="esri:CircularArc">
 <FromPoint xsi:type="esri:PointN">
  <X>2754128.54136811</X> 
  <Y>127331.741810211</Y> 
  </FromPoint>
 <ToPoint xsi:type="esri:PointN">
  <X>2754086.20832042</X> 
  <Y>127378.371509929</Y> 
  </ToPoint>
 <CenterPoint xsi:type="esri:PointN">
  <X>2754135.88396938</X> 
  <Y>127380.938837321</Y> 
  </CenterPoint>
  <IsCounterClockwise>false</IsCounterClockwise> 
  <IsMinor>false</IsMinor> 
  <IsLine>false</IsLine> 
  </Segment>
 <Segment xsi:type="esri:CircularArc">
 <FromPoint xsi:type="esri:PointN">
  <X>2754086.20832042</X> 
  <Y>127378.371509929</Y> 
  </FromPoint>
 <ToPoint xsi:type="esri:PointN">
  <X>2754086.16464627</X> 
  <Y>127379.438170144</Y> 
  </ToPoint>
 <CenterPoint xsi:type="esri:PointN">
  <X>2754135.8839253</X> 
  <Y>127380.93969012</Y> 
  </CenterPoint>
  <IsCounterClockwise>false</IsCounterClockwise> 
  <IsMinor>false</IsMinor> 
  <IsLine>false</IsLine> 
  </Segment>
 <Segment xsi:type="esri:Line">
 <FromPoint xsi:type="esri:PointN">
  <X>2754086.16464627</X> 
  <Y>127379.438170144</Y> 
  </FromPoint>
 <ToPoint xsi:type="esri:PointN">
  <X>2754081.67923976</X> 
  <Y>127489.030517839</Y> 
  </ToPoint>
  </Segment>
  </SegmentArray>
  </Ring>
  </RingArray>

I have for now fixed it on my own version as you have done with #2643: By adding a check for type 51, and then changing the type to a simple polygon:

/* -------------------------------------------------------------------- */
/*      type 50 appears to just be an alias for normal line             */
/*      strings. (#1484)                                                */
/* -------------------------------------------------------------------- */
    if( nSHPType == 50 )
        nSHPType = SHPT_ARC;

/* -------------------------------------------------------------------- */
/*      type 51 appears to just be an alias for polygon             */
/* -------------------------------------------------------------------- */

	if( nSHPType == 51 )
        nSHPType = SHPT_POLYGON;

The format and content of the complete XML-file is the same as in #2643 so i did not attach the exported XML and shape-files

regards Jesper

[warmerdam]

Chaitanya,

Can you review this in light of your other pgeo work and see if there are additional issues still to fix? Perhaps this is already addressed?

[chaitanya]

Duplicate ticket. Already fixed in #3100.