Latest Contributions by larryzhang

‎09-15-2019

Hello, guys, Any advice on ArcGIS/ ArcGIS Pro desktop installation in Linux Deepin (desktop and server)? +++++ Just check the doc on a Mac at https://pro.arcgis.com/en/pro-app/get-started/run-pro-on-a-mac.htm, which looks that it is going to be very promising via VMware Fusion, parallels. What about it in Linux (Deepin) via virtualbox, parallels, or VMware ?

‎09-16-2018

Hello imagery associates, When loading the bundle Pleiades-1 RAW data (i.e., bundle 0.5m Panchromatic and 2m Multispectral under folders) into Mosaic Dataset, do you witness the following? The standard Pleiades-1 template (attached) works fine with Mosaic Dataset in ArcGIS 10.4 or 10.4.1.: ... Completed crawling 470 data source items. Added 470 mosaic dataset items. However, this Pleiades-1 template is not functional at all with ArcGIS 10.5/ 10.6.1 and ArcGIS Pro, even though it is applied onto the same bundle Pleiades-1 data folders with all same options: ArcGIS 10.5/ 10.6.1: Start Time: Sun Sep 16 13:28:32 2018 2018-09-16T13:28:32.066: Loading raster datasets 2018-09-16T13:29:12.046: Completed crawling 470 data source items. Added 0 mosaic dataset items. 2018-09-16T13:29:12.061: Error: 8004205f: No new mosaic dataset item was added. Succeeded at Sun Sep 16 13:29:12 2018 (Elapsed Time: 40.06 seconds) ArcGIS Pro 2.2: Start Time: Sunday, September 16, 2018 1:12:01 PM 2018-09-16T13:12:04.619: Loading raster datasets 2018-09-16T13:12:49.082: Completed crawling 470 data source items. Added 0 mosaic dataset items. 2018-09-16T13:12:49.095: Error: 8004205f: No new mosaic dataset item was added. Succeeded at Sunday, September 16, 2018 1:12:51 PM (Elapsed Time: 50.03 seconds) It looks strange. It should not be a bug, but no other root causes to dig. I would like to confirm with you, if any similar or reproducible observations.

‎03-26-2018

thx, Xu, Eventually, the issue is identified and fixed in mosaic dataset: In addition to two local datum files (.las, .los) to be placed in 'C or D:\Program Files\ArcGIS\Pro\Resources\pedata\nadcon', the third file (.GTF), which is referred to 'GRID Transform File', is also required and copied to the user’s Application Data folder, in the ESRI Custom Transform directory as follows, saying hlzhang525: C:\Users\hlzhang525\AppData\Roaming\ESRI\Desktop10.5\ArcToolbox\CustomTransformations Similarly, to do same in image server, if this local transformation is applied to image services or dynamic caching .. Regards, ZHANGH @ ARAMCO

‎03-25-2018

Hello, Recently practice and witness the following, which is reproducible in ArcGIS 10.4.1 and 10.5.1: Background: ArcGIS built-in (3 to 5-parameter) transformation between WGS84 and local datum, called 'Option 1' used by default in Mosaic Dataset; A more accurate (7-parameter) custom transform between WGS84 and local datum, called 'Option 2', which is used to take over Option 1 in Mosaic Dataset Action: Option 2 is customized, which is also configured via Environment Settings (for takeover of Option 1), where NADCON file is managed under C or D:\Program Files (x86)\ArcGIS\Desktop10.5\pedata\nadcon folder Symptom: When images with WGS84 (UTM) are loaded into a Mosaic Dataset (with local datum), the Option 2 is not functional, which still uses Option 1 for the transformation. It looks no takeover at all. However, if those images are directly loaded into ArcMap, it demonstrates two options: Option 1 and Option 2. When the Option 2 is selected, the transformation works fine. Any advice? Regards,

‎02-27-2018

Hello, desktop teams, As well-known to ArcGIS /ArcGIS Pro users, most types of databases require users to install and configure a database client on the machine that will connect to the database. For example, they have to install Oracle instant client (32-bit, 64-bit) with the Path environment variable properly configured, after desktop ArcGIS /pro installed. In practice, it is very troublesome, especially, in an enterprise (the tight security). In fact, we witness that this type of database-oriented installation/ configuration steps are very hassle to non-IT professionals like economists, engineers and geoscientists, even very often to many IT support guys. Just wondering if ESRI can build one single desktop ArcGIS installer (32-bit) or ArcGIS Pro installer (64-bit) for enterprise users, which include major supported database clients like Oracle instant client (32-bit or 64-bit) and path environment to be configured properly. As an example, ArcGIS Pro 1.4 or later already implement similar for Python 3 (Conda), which certainly demonstrates much better productivity and efficiency to help enterprise users. please advise

‎11-19-2017

ian, For ECW file (created by ER Mapper or ERDAS Imagine), users very often see this type of black or white edge issue. Right now, Hexagon Spatial (ERDAS Intergraph) usually recommend users to use JP2 (rather than ECW) for interoperation. In order to remove the black or white edge issue around the ECW file, you may try below: 1. to import ECW into IMG by ERDAS Imagine, then clip dirty edge of this IMG file in ERDAS, or manage this IMG dataset in MD via manually editing footprint (preferable); 2. directly add ECW into MD and then manually edit footprint in MD to remove white edge (not recommendable)

‎06-17-2017

Thanks for the link. It looks that we need more time to explore all those GP utilities and workflows for efficiently pre-processing LAS datasets in ArcGIS, including Locate Outliers ... Until now, ArcGIS have offered many effective GP tools and workflows to help enterprise customers to deal with 'well-processed & well-organized' LAS point cloud, including 'manage, use, analyze LAS data, even extract DEM and building roofs from LAS data'. Hopefully, ArcGIS users will see some efforts from ESRI to help effectively pre-process LAS point cloud soon ...

‎06-15-2017

Thanks Gunter, Please help provide ArcGIS Documentation link that shows a way to find out outlines in LAS (QA/QC). To get a well-processed DSM data (rather than DEM/DTM or normalized DSM) from those old & poor LAS point cloud is our major goal. Regards

‎06-14-2017

Hey, guys Many of our LAS data (which were not processed/ classified by the data vendors) urgently need edit and clean up, in particular, detection and removal of massive ‘outlines’. After well done in this way, we expect that the results of LAS data can well represent DSM (digital surface model). Of course, those DSM will be used to do further processing and analysis. The question is: In ArcGIS, any effective GP tools can be used to assist us to meet this goal? Ideally, a GP tool that utilizes RANSAC algorithm (random sample consensus) is available. If not, any alternatives? Please advice

‎06-06-2017

Hello, data analysis and business intelligent team, As well known, with the assistance of Exploratory Spatial Data Analysis (ESDA) tools in ArcGIS, we can get deep insight about our data, so that those analysis results can help us to choose the best interpolation algorithm and also the right analysis methods. Similarly, the Exploratory Regression (ER) analysis tool is also widely used for data analysis practitioners to easily find a properly specified OLS model (Ordinary Least Squares). Sometimes, it certainly works good, especially, when no extreme outliers in the datasets. However, many factors and technical considerations drive us to consider the combination of both ESDA and ER analysis methods together in practice, because we believe that will significantly improve the reliability of the analysis model and prediction accuracy, in particular, for detection of outliers (spatially over time) ... So, as data analysts, please share any relevant thoughts about this? For example, advantages and benefits, some cautions ... when combing both together in your applications. Regards,

‎03-23-2017

Amin, I roughly tested it, which looks that the tool itself can work on rooftops and/ or walls (facades), because it relies on your selection in advance. Just share below for reference: · On PV application, some good Solar models like SurfSun3D offer accurate and efficient approach to estimate solar potentials (urban 3D buildings rooftops & walls) in open-source GRASS GIS. https://beststpbstucourse.files.wordpress.com/2015/03/an-open-source-3d-solar-radiation-model-integrated-with-a-3d-geographic-information-system.pdf · Google Project Sunroof presents another effective way to estimate solar potentials for many of US cities (urban buildings), which combines 3D DSM (from stereo airphotos or WorldView-3) with a cut-edge algorithm ‘Random sample consensus’, which sounds wonderful (just not sure if those estimations are accurate enough). https://google.com/get/sunroof/data-explorer-methodology.pdf

‎03-19-2017

Jessica, From your description (drone photos, location table), it is challenging for you to get it done "automatically" in ArcGIS Pro, because the camera model is missing. From our experience on 2D/3D drone photos/videos (like DJI), you are still required to use photogrammetry package (like Pix4D) to do that first. Pls refer to http://gis.stackexchange.com/questions/202576/drone-aerial-imagery-to-qgis Also you can try ortho mapping workspace in ArcGIS Pro, once you get that drone camera orientation parameters... (If having many photos without camera parameters, in practice it is not recommended to directly use ArcGIS/ ArcGIS Pro Georeferencing Tool for this type of purpose)

‎03-15-2017

Hopefully, ESRI will take positive action on this to support the enterprise needs. In fact, some good stuffs have been already done in the development environment through the use of open source Python (Conda) and R (RStudio/ MRS) within ArcGIS Pro. It is time to move those into the enterprise to support operations...

‎03-15-2017

thx, dan, In fact, the question's core nature is: is it possible for ArcGIS Pro to improve the manager, which will help determine the package dependencies tree and install automatically from the local repository. Na matter which one, conda or pip ... Here, TensorFlow or openCV is just listed as an example here. What we really want is to install scikit-learn, scikit-image, etc. behind the firewall ... regards,

‎03-15-2017

Hello, fellows, With Conda and Python Package Manager, ArcGIS Pro 1.4 offers a great way to install and update external open-source Python packages. Plus with the support of R (Microsoft R Server) via R-ArcGIS binding, ArcGIS Pro 1.3/ 1.4 has gradually become an innovation platform in development environment, especially for raster and data analytics ... However, it is still challenging for us to install and update behind the firewall (in the enterprise environment), particularly Python packages in ArcGIS Pro. For example, first to determine and download all dependencies of the Python package (saying, TensorFlow, openCV, etc.), including dependencies of those dependencies (dependency tree), into a local repository (copy and transfer to this repository), and then automatically to install from the local repository behind the firewall. So, does ESRI have plan to improve the Python Package Manager sooner? Or, is there any 'effective & reliable' way to automatically create a local Python package dependencies and dependencies of those dependencies first, and then automatically install those into ArcGIS Pro from the local repository in the enterprise (via conda, pip or any other)? (Relatively, much easier for us to do with R packages and dependencies for ArcGIS Pro ..., even not effective) Regards, Larry @ ARAMCO

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My Ideas

Latest Contributions by larryzhang

ArcGIS Pro installation in Linux Deepin

Pleiades-1 template not functional in MD (ArcGIS 10.5/10.6.1 & Pro)

Re: custom transformation not functional mosaic dataset

custom transformation not functional mosaic dataset

Help build one single desktop installer, including database clients, as a standard delivery process

Re: Removing the white border from a raster

Re: GP Tools for LAS edit and outlines detection

Re: GP Tools for LAS edit and outlines detection

GP Tools for LAS edit and outlines detection

any relevant practice to share, when combining ESDA and ER together

Re: 3D Cities Solar Analyst

Re: ArcGIS Pro orthomapping tool

Re: create a local package dependencies repository and then install

Re: create a local package dependencies repository and then install

create a local package dependencies repository and then install

Re: GIS to SAP Integration

Re: Open/ Use Lpkx ( new layer package )

Re: How to calculate shortest path?

Re: Cokriging with a categorical covariable?

Re: Cokriging with a categorical covariable?

Web AppBuilder Custom Widgets

Python Snippets

R-ArcGIS

ArcAPI

GIS for Geology