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location Thunder Bay, Canada
age 41
visits member for 3 years, 11 months
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JAKUB SISAK photography

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Jakub Sisak, GISP


Jul
4
comment Is there a way to render/show ACAD drawing in ArcMap correctly?
Oh yeah. That works pretty nice! I am able to select any part of the drawing directly in CAD, save as DXF. Best part is that doing it this way, the various saved DXF's render perfectly in ArcMap - identical to the original drawing.
Jul
3
comment Is there a way to render/show ACAD drawing in ArcMap correctly?
Good Ideas, thanks. I wish I had AutoCAD with Map 3D. My TurboCAD Deluxe does not export to shapefile but i will try the DXF approach. Even Purging is an advanced option in TurboCAD.
Jul
3
comment Symbolizing File Geodatabase feature class with Layer File created from AutoCAD drawing?
As I mentioned above - can't do that. The only data source option there is a "CAD Feature Class" type. Can't even choose anything else.
Jun
19
comment What program is used to create this?
Looks like screen captures of a single large map. Labels are cut off in corners and not optimized for the different scales.
Jun
18
comment How to assign correct flow direction to stream network polylines?
Nice script @StephenLead!
Jun
18
comment How to assign correct flow direction to stream network polylines?
That's it @Chris! Totally forgot about this. I simply converted raster to feature. Please add this bit to your answer.
Jun
17
comment How do you hide a feature within a point layer?
Definition query. To hide a feature whose objectid is 1: OBJECTID not in (1)
Jun
17
comment Is the use of Google Earth imagery via the OpenLayers Plugin in QGIS legal?
CanVec is vector data only, 1:50000. I use often use it for course maps. NRCAN offers no high resolution imagery.
Jun
17
comment Is the use of Google Earth imagery via the OpenLayers Plugin in QGIS legal?
Thanks. @Andre pointed me to the answer. Basically such use is not permitted.
Jun
17
comment Is the use of Google Earth imagery via the OpenLayers Plugin in QGIS legal?
Thanks "Using Google Maps via TMS URL's is against their TOS". It is not legal then. Agreed, in populated and "popular" areas of the worlds there are other options but not in even slightly remote locations in Canada - only google earth has partial coverage there.
Jun
17
comment Arcscene export issue: only upper layer showing up
Do you have enough rep to post the screen shoot?
Jun
13
comment Can't insert AI CS6 files as objects into ArcMap 10.1
Wow. didn't even know that was an option. I figured if they could not figure out excel and word anything more graphically complex would have been out of the question. Did transparencies, shadows and effects came over correctly and rendered correctly when placed over a map and exported? As a workaround you could try saving AI as EMF and adding as graphic. Static and forget effects such as shadows, opacity but 100% transparency works.
Jun
13
comment What is the advantage to using a representation vs a layer file?
If you can create a cartographic effect you want with layer's symbology alone then stick with layers. Representations are, IMHO, a bit of a train wreck. Too much complexity for not enough functionality. Like many late ESRI features it sounds good on paper but, at least for my workflow, it didn't really work in reality.
Jun
1
comment Adding LAS files (or derivatives of) to mosaic error in ArcGIS
What is the LAS version? Only 1.0, 1.1, 1.2, and 1.3 are supported.
May
29
comment Producing building shadows?
Also - so true about the current state of ArcGIS bug fixes... Fortunately As ArcObjects are being updated, ESRI increments them with numbers, add functionality, change things, but also, most importantly, leave the older versions mostly untouched.
May
29
comment Producing building shadows?
Thanks @whuber! I understand rings, segments, etc. Thought this is a great script and I saw the python thread inspired by this post as well. I am well versed in ArcObjects so I was trying to think about a possible ArcObjects solution. Just wanted to make sure I understand the "loop over rings" bit -specificaly how the shadow is constructed. I think I do. In avenue zero area polygon being dissolved with others may not be an issue but I am pretty sure ArcObjects will throw an error - may have to test for it which will add processing time. Surprising avenue could handle it!
May
29
comment Producing building shadows?
@whuber - Nice! I know this is an old post and I also don't really understand avenue... I am also not familiar with what do you refer to "loop over rings" Do I understand correctly that for each segment in the ring you create a small 4-vertex polygon by offsetting the the fist and second then subsequent pairs of the ring's vertices by the value in the xy variable? All then gets merged to form the connected shadow? Assuming this is what's happening, what happens when the 4 vertices form a polygon with no area? Does the union succeeds?
May
28
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
@mr.adam - great idea with the left and right buffers! If OP is familiar with ArcObjects it is possible but not easy to build left and right buffers using IConstructCurve3:ConstructOffset. It involves constructing the left and righ polygons programatically from line segments. Similarly, the same could be done in ArcMap with editing tools by offsetting lines left and right then converting completed outlines to polygons. In any case, let's assume the road segments do not correspond with the road signs in which case a combination of your idea with moving vertices to roads and splitting is needed
May
27
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
Do the sighs have any other attributes besides speed? I am asking because there could be something that can link the signs to the roads. Otherwise, what you want to do is not possible without manually snapping the signs onto the road segments, transferring attributes and splitting the road segments. (you could do this programatically but the distances are variable so full automation may not be possible) The result will not be a stand-alone table but rather an attribute table to which all of this information will be transferred.
May
27
comment ArcGIS 10: Create an event linear layer from a point layer based on directionality
Are there any other attributes stored with the road signs? Sounds like you will need to snap them to the roads first then somehow transfer directionality of the road to the road signs then cut lines by the vertices and transfer attribute values from signs to each segment. Just an idea. Might help if you posted the data.