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Jakub Sisak, GISP


Jun
26
revised General GIS Questions for Job interviews
deleted 12 characters in body
Jun
26
answered General GIS Questions for Job interviews
Jun
26
comment Custom panning using ArcGIS Engine
Can you post the code in the event handlers. Does the panning terminate OnMouseUp and just ends up in an unexpected location? Have you tried creating a point from the X,Y of OnMouseDown and OnMouseUp? Do they correspond with where panning starts and ends.
Jun
26
comment Place image inside of Label
very similar except that I use Picture Marker symbol.
Jun
25
comment ArcGIS 10: Adjust custom grid intervals based on map scale?
As @Stephen has already pointed out this cannot be done using the out-of-the box tools. ArcPy is mainly geared towards geoprocessing and I highly doubt that ESRI will ever add ArcPy control over the Layout. You might be able to change the interval programatically with ArcObjects and VB.Net or C# but you would have to have a dll or an add-on running in ArcReader. I never developed anything for ArcReader so I can't even begin to speculate if it can be done. I am 95% sure it would work in ArcMap though.
Jun
25
answered Place image inside of Label
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 Desktop calculate 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?