10,041 reputation
640103
bio website facebook.com/…
location Thunder Bay, Canada
age 41
visits member for 4 years, 3 months
seen 11 hours ago

enter image description here

JAKUB SISAK photography

To see my photography please visit:

facebook | fine art america | 500px


Jakub Sisak, GISP


Jun
24
awarded  Quorum
Jun
23
answered How do I download tracks from the GARMIN GPSMAP 78 usin DNRGarmin?
Jun
23
comment Best book for learning ArcGIS functionality?
In the early days (version 8), there were manual-like books published by ESRI. This included two huge volumes about learning to develop with ArcObjects. Given what ESRI charges for their instructor-led training, I don't think we will be seeing any official manuals any time soon. I took several "less expensive" online courses then copied the content as I was going through it and made my self a manual from that.
Jun
23
answered Spatial resolution of Google Earth Imagery
Jun
23
comment How to determine a point lays within a polyline in arc engine?
@Kev84 If the returned cursor does not contain any features then the features do not intersect. You could try buffering the input geometry using the same topological operator to create a search perimeter. Here is a iHitTest example. You can also specify search distance, and obtain the actual segment of the polyline and from that the neaest vertex, etc..
Jun
20
comment How to creat a graph from a Field values (VBA_ArcObjects)
This appears to be "Automation error The object invoked has disconnected from its clients" In VBA the problem is sometimes linked to not explicitly releasing ArcObjects references. When no longer needed (especially in a loop) you should explicitly set the variable = Nothing. (for example set pDataStatistics = nothing, etc.) If you debug and step through the code line by line you should be able to isolate where exactly its crashing.
Jun
19
comment How to creat a graph from a Field values (VBA_ArcObjects)
What exactly doesn't work? Can you be more specific? IDataStatistics:Statistics (IStatisticsResults) will provide you with the required field statistics.
Jun
18
comment How does ArcGIS calculate the “inside” point for “Feature to Point”
As for the reverse-engineering; In ArcObjects the point in question is called the "label point" (a point guaranteed to be inside an area) as oppose to the "centroid point" which is the the center of gravity. These two points can be obtained programatically from the iArea interface (Centroid, LabelPoint). I did not find any reference to the actual algorithm used to place the label points but you could probably observe the behaviour by labeling polygons using markers because according to ESRI the "label point" is the point at which the label is located.
Jun
18
revised How to determine a point lays within a polyline in arc engine?
deleted 4 characters in body
Jun
18
comment How to determine a point lays within a polyline in arc engine?
The "Topological Operator" approach could work but it will not be very efficient. I don't do C# (just VB) but I just don't understand what is going on in your code? Are you making a polyline from the incoming point and only adding one point? Why project the polyline? Does the Spatial Reference of the two geomtries differ? You should maybe debug this on features that share the same spatial reference first. Also, you might want to use iTopologicalOperator5 instead since it supersedes the version you are using.
Jun
18
answered How to determine a point lays within a polyline in arc engine?
Jun
14
comment Measure the area of a polygon resulting from the intersection of two other polygons?
Which program do you use?
Jun
14
answered How to creat a graph from a Field values (VBA_ArcObjects)
Jun
14
answered Does anyone know a function to determine if a Point lies on a polyline?
Jun
8
comment Can anyone help me to determine the coordinate system of an image I need to georeference?
There appears to be enough features (buildings, water bodies, roads, rail) on the screen capture. You should not have any trouble georefereincing this. (you will probably need to rotate it first) Judging by the image you can't really expect any great accuracy here.
Jun
3
comment How can I generate a high resolution rendering of the globe?
Nevermind. Found it. Thanks a bunch!#case(3) // --- North America --- #declare Light_Angle=<20,0,-22>; #declare View_Angle=<32,0,-92>; #break
Jun
3
accepted How can I generate a high resolution rendering of the globe?
Jun
3
comment How can I generate a high resolution rendering of the globe?
OMG! Fantastic! One link is broken there so I used the Nasa imagery recomended above. could you quickly describe how to center the globe on Ontario, Canada. Just need to get that and it's perfect!
Jun
3
comment How can I generate a high resolution rendering of the globe?
This is what I need. Of course with no experience using POV-Ray there is going to be a a learning curve. I already have an error on the script in the light position part. #switch (View) "Expected 'numeric expression'"
Jun
3
comment Advice on purchasing new scanner / plotter?
Can't comment on the scanning option but I have recently migrated from HP to Canon (HP 55000 42 to Canon iPF8300 42) and I must say that the Canon outperforms the HP on just about every level; quality, speed, ease of use.... In Canada the Canon iPF8300 was about $7500.