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Surveying Solutions
Registrace 24. 01. 2020
Hello there...
Welcome to Surveying Solutions, your number one channel where you get Solutions to all your Surveying Problems.
As a graduate of Surveying and Geoinformatics from the Federal School of Surveying, Oyo, I'm here to share my knowledge of the profession with you. We're going to explore academic and professional activities.
Let's learn and share knowledge...
Don't forget to subscribe...
PS.
I'm open to Fully Funded Scholarship offers...
For more details send a mail to Survsolution@gmail.com.
Use our Support Link (Below) to Support Us.
Thank you!
Welcome to Surveying Solutions, your number one channel where you get Solutions to all your Surveying Problems.
As a graduate of Surveying and Geoinformatics from the Federal School of Surveying, Oyo, I'm here to share my knowledge of the profession with you. We're going to explore academic and professional activities.
Let's learn and share knowledge...
Don't forget to subscribe...
PS.
I'm open to Fully Funded Scholarship offers...
For more details send a mail to Survsolution@gmail.com.
Use our Support Link (Below) to Support Us.
Thank you!
Centroids of Polygons using ArcGIS Pro
A centroid is a geometric concept that represents the center of a shape or object. In the context of a polygon (such as a country boundary or a lake in GIS), the centroid is the point that can be thought of as the "average" position of all the points in the shape. It's often referred to as the "center of mass" or "balance point" of the shape.
In GIS, the centroid of a polygon is useful for various analyses, such as labeling maps, spatial analysis, and when trying to represent an entire area with a single point.
In GIS (Geographic Information Systems), the centroid is crucial for several reasons:
1. Representation of Areas with a Single Point
Simplification: The centroid provides a single representative point for complex shapes like polygons (e.g., countries, lakes, or districts). This simplification is useful when you need to represent an area in analyses that require points rather than entire polygons.
2. Label Placement on Maps
Cartography: Centroids are commonly used for placing labels inside polygons on maps. This ensures that labels are centered within the area they describe, making the map easier to read and more aesthetically pleasing.
3. Spatial Analysis
Proximity Analysis: Centroids are used to calculate distances between features. For example, if you need to determine the distance between two cities represented by their boundary polygons, you might use their centroids for the calculation.
Clustering: In spatial clustering algorithms, centroids are often used as reference points to group nearby features together based on spatial proximity.
4. Network Analysis
Routing and Logistics: Centroids can be used as nodes in network analyses, such as determining optimal routes for transportation or service delivery. The centroid of a city, for instance, might represent a central point for routing logistics operations.
5. Data Aggregation and Reporting
Spatial Summarization: When summarizing spatial data, such as population density or land use types, centroids can represent the central point of an aggregation unit (like a census tract or district) for easier visualization and reporting.
Zonal Statistics: Centroids can serve as a reference for calculating zonal statistics, where values are aggregated or averaged within a given area.
6. Geocoding
Point of Reference: When geocoding addresses that fall within a specific polygon (e.g., within a city boundary), the centroid can serve as a fallback or approximate location when precise address-level data is unavailable.
7. Environmental Modeling
Center of Influence: In environmental modeling, such as climate studies or habitat analysis, the centroid can represent the "center" of an influence area, which is useful in determining where to focus efforts or resources.
8. Spatial Weighting
Weighted Analysis: In some spatial analyses, centroids are used to apply weights to different regions based on their geographic center. This is particularly useful in models where the location's importance varies with distance from the centroid.
9. Emergency Response and Planning
Centralized Response Point: In disaster management or urban planning, the centroid can be used to identify a central point for emergency response, resource allocation, or planning interventions.
10. Visualization and Mapping
Heatmaps and Thematic Maps: When creating heatmaps or thematic maps, centroids can represent the focal points of data concentrations, helping to visualize patterns and trends more effectively.
In GIS, the centroid plays a versatile role, bridging the gap between detailed spatial data and more abstract, analytical applications. Its ability to represent complex spatial features with a single point makes it indispensable for a wide range of geospatial analyses and operations.
In GIS, the centroid of a polygon is useful for various analyses, such as labeling maps, spatial analysis, and when trying to represent an entire area with a single point.
In GIS (Geographic Information Systems), the centroid is crucial for several reasons:
1. Representation of Areas with a Single Point
Simplification: The centroid provides a single representative point for complex shapes like polygons (e.g., countries, lakes, or districts). This simplification is useful when you need to represent an area in analyses that require points rather than entire polygons.
2. Label Placement on Maps
Cartography: Centroids are commonly used for placing labels inside polygons on maps. This ensures that labels are centered within the area they describe, making the map easier to read and more aesthetically pleasing.
3. Spatial Analysis
Proximity Analysis: Centroids are used to calculate distances between features. For example, if you need to determine the distance between two cities represented by their boundary polygons, you might use their centroids for the calculation.
Clustering: In spatial clustering algorithms, centroids are often used as reference points to group nearby features together based on spatial proximity.
4. Network Analysis
Routing and Logistics: Centroids can be used as nodes in network analyses, such as determining optimal routes for transportation or service delivery. The centroid of a city, for instance, might represent a central point for routing logistics operations.
5. Data Aggregation and Reporting
Spatial Summarization: When summarizing spatial data, such as population density or land use types, centroids can represent the central point of an aggregation unit (like a census tract or district) for easier visualization and reporting.
Zonal Statistics: Centroids can serve as a reference for calculating zonal statistics, where values are aggregated or averaged within a given area.
6. Geocoding
Point of Reference: When geocoding addresses that fall within a specific polygon (e.g., within a city boundary), the centroid can serve as a fallback or approximate location when precise address-level data is unavailable.
7. Environmental Modeling
Center of Influence: In environmental modeling, such as climate studies or habitat analysis, the centroid can represent the "center" of an influence area, which is useful in determining where to focus efforts or resources.
8. Spatial Weighting
Weighted Analysis: In some spatial analyses, centroids are used to apply weights to different regions based on their geographic center. This is particularly useful in models where the location's importance varies with distance from the centroid.
9. Emergency Response and Planning
Centralized Response Point: In disaster management or urban planning, the centroid can be used to identify a central point for emergency response, resource allocation, or planning interventions.
10. Visualization and Mapping
Heatmaps and Thematic Maps: When creating heatmaps or thematic maps, centroids can represent the focal points of data concentrations, helping to visualize patterns and trends more effectively.
In GIS, the centroid plays a versatile role, bridging the gap between detailed spatial data and more abstract, analytical applications. Its ability to represent complex spatial features with a single point makes it indispensable for a wide range of geospatial analyses and operations.
zhlédnutí: 33
Video
How to Calculate Delta Northing and Delta Easting from Distance and Bearing | WITH PROOF!
zhlédnutí 86Před 9 hodinami
Hello In today's Tutorial, you will Understand the Basics behind Delta Northing and Delta Easting, and Distance and Bearing using the Four Quadrants. Thank you for watching and subscribing and sharing and commenting and supporting us. How to Calculate Distances and Bearings from Quadrants czcams.com/video/1elkPqJiqto/video.html
Centroids of Polygons using QGIS
zhlédnutí 95Před 16 hodinami
A centroid is a geometric concept that represents the center of a shape or object. In the context of a polygon (such as a country boundary or a lake in GIS), the centroid is the point that can be thought of as the "average" position of all the points in the shape. It's often referred to as the "center of mass" or "balance point" of the shape. In GIS, the centroid of a polygon is useful for vari...
How to Split Lines by Maximum Length using QGIS
zhlédnutí 74Před dnem
In QGIS, you can split a line geometry by a maximum length using the "Split Lines with Maximum Length" tool, which is a native tool in QGIS. Here's how you can do it: Steps to Split a Line by Maximum Length in QGIS: 1. Open QGIS and load the line layer you want to split. 2. Select the Line Layer in the Layers panel. 3. Go to Processing Toolbox: If the Processing Toolbox is not open, you can ope...
How to Calculate Topographic Wetness Index using ArcGIS Pro | Flood Mapping
zhlédnutí 115Před 14 dny
The Topographic Wetness Index (TWI) is a commonly used index in hydrology and geomorphology to quantify the effects of topography on the location and extent of wet areas in a landscape. It is particularly useful for identifying potential areas of soil saturation, runoff generation, and the spatial distribution of soil moisture. TWI is derived from a Digital Elevation Model (DEM) and is based on...
How to Calculate Topographic Wetness Index using ArcGIS | Flood Mapping
zhlédnutí 135Před 14 dny
The Topographic Wetness Index (TWI) is a commonly used index in hydrology and geomorphology to quantify the effects of topography on the location and extent of wet areas in a landscape. It is particularly useful for identifying potential areas of soil saturation, runoff generation, and the spatial distribution of soil moisture. TWI is derived from a Digital Elevation Model (DEM) and is based on...
Lines to Polygons using ArcGIS Pro
zhlédnutí 80Před 21 dnem
To convert lines to polygons in ArcGIS Pro, you can use the "Feature To Polygon" tool. Here are the steps: 1. Open ArcGIS Pro and your project: Ensure your lines feature class is loaded in your map. 2. Prepare your data: Make sure your lines are clean and form closed loops. If they don't, you might need to edit them or use the "Planarize Lines" tool to split intersecting lines. 3. Open the Geop...
Matrix Determinant | How to Calculate Determinant of a Matrix using Excel
zhlédnutí 60Před 21 dnem
Matrix Determinant | How to Calculate Determinant of a Matrix using Excel
Creating Topographic Profile in ArcGIS Pro
zhlédnutí 117Před 28 dny
Interactive elevation profile basics The interactive Elevation Profile tool generates a graph of height values along a linear path in the view. The profile is calculated using the ground elevation surface in a map (2D) or a scene (3D), and unlike other exploratory analysis tools, the values are derived from the data sources for the elevation surface rather than the view's level of detail. The t...
How to Use Select by Location using QGIS
zhlédnutí 106Před měsícem
Selecting features by location in QGIS involves using spatial relationships to select features from one layer based on their relationship to features in another layer. Here's a step-by-step guide on how to do this: 1. Open QGIS and load the layers you want to work with. You can load layers by dragging and dropping files into QGIS or by using the "Add Layer" button. 2. Open the 'Select by Locati...
Adjusting Survey Observations | Condition Equation Method of LSA | Angular Observations
zhlédnutí 168Před měsícem
How to Multiply Matrices. czcams.com/video/ZiAeULUkwGY/video.html Matrix Multiplication - Casio Fx 991ES PLUS || Matrix Multiplication using Calculator. czcams.com/video/LCfEBWphpCg/video.html Inverse of a Matrix. czcams.com/video/eZgEsj92ZO0/video.html How to find the Inverse of a matrix on Calculator using Casio fx-991ES Plus czcams.com/video/TS-e9DZDS14/video.html Hello In today's Tutorial, ...
Engineering Surveying | Allowable Misclosure for Levelling and Traversing | Reduced Level of Points
zhlédnutí 160Před měsícem
Hello In today's Tutorial, we Solved Problems on Allowable Misclosures for Traversing and Levelling, and How to Calculate Reduced Levels of Points, in Engineering Surveying. Thank you for watching and subscribing and sharing and commenting and supporting us.
How to Calculate and Check the Included Angles in a Geodetic Control Loop | Plot with AutoCAD
zhlédnutí 128Před měsícem
Hello In this Tutorial, you will Learn How Calculate the Included Angles in a Geodetic Control Netwrok, and Check if their Sum is 180°. Then, Plot on AutoCAD for Visualization. Thank you for watching and subscribing and sharing and commenting and supporting us.
Topographic Roughness Index using ArcGIS Pro
zhlédnutí 132Před měsícem
The Topographic Ruggedness Index (TRI) is a measure of the difference in elevation between adjacent cells in a digital elevation model (DEM). It is a quantitative measure used to assess the variability of terrain or surface roughness in a given area. It is often used in geospatial and environmental studies to evaluate how rugged or uneven a landscape is. Formula (mean-min)/(max-min) Interpretat...
Adjusting Survey Observations | Linear Observations
zhlédnutí 185Před měsícem
Hello In this Tutorial, you will Learn How to Use Observation Equation Method of Least Squares Adjustment to Adjust Measured Distances. Thank you for watching and subscribing and sharing and commenting and supporting us.
How to Calculate Flow Direction using ArcGIS | Flow accumulation | Stream Order | Stream to Feature
zhlédnutí 164Před měsícem
How to Calculate Flow Direction using ArcGIS | Flow accumulation | Stream Order | Stream to Feature
Align Geometry of Raster for Modelling and Prediction
zhlédnutí 86Před měsícem
Align Geometry of Raster for Modelling and Prediction
QGIS Research Tools | Generate Regular Points in QGIS and Determine their Coordinates
zhlédnutí 178Před 2 měsíci
QGIS Research Tools | Generate Regular Points in QGIS and Determine their Coordinates
How to Extract Land Use Classes using ArcGIS Raster Calculator
zhlédnutí 168Před 2 měsíci
How to Extract Land Use Classes using ArcGIS Raster Calculator
How to Extract Land Use Classes using QGIS Raster Calculator
zhlédnutí 264Před 2 měsíci
How to Extract Land Use Classes using QGIS Raster Calculator
Profile Tool for Surface Comparison using QGIS
zhlédnutí 143Před 2 měsíci
Profile Tool for Surface Comparison using QGIS
Assign Elevation Values to Latitudes and Longitude | GPS Visualizer
zhlédnutí 179Před 2 měsíci
Assign Elevation Values to Latitudes and Longitude | GPS Visualizer
How to Create Wedge Buffer using QGIS
zhlédnutí 242Před 2 měsíci
How to Create Wedge Buffer using QGIS
Kriging Interpolation using ArcGIS Pro
zhlédnutí 428Před 2 měsíci
Kriging Interpolation using ArcGIS Pro
Kriging Interpolation using ArcGIS | Elevation Data
zhlédnutí 220Před 2 měsíci
Kriging Interpolation using ArcGIS | Elevation Data
Convert AutoCAD File to Shapefile using QGIS | Change Project CRS | Load Basemap | DXF to SHP
zhlédnutí 1,5KPřed 2 měsíci
Convert AutoCAD File to Shapefile using QGIS | Change Project CRS | Load Basemap | DXF to SHP
Subdivision of Plots using AutoCAD Civil 3D
zhlédnutí 679Před 3 měsíci
Subdivision of Plots using AutoCAD Civil 3D
How to Scale in AutoCAD | Scale to Specific Length | Scale Factor
zhlédnutí 585Před 3 měsíci
How to Scale in AutoCAD | Scale to Specific Length | Scale Factor
very bas resolutaion.
What is the name of the app ?
This is QGIS software.
Thanks alot Boss
You're welcome, Philip.
Why divided by 8?
I thought that if you multiplied a minus sign through an equation the sign will change -×- = +. That -p is supposed to change to p in that first equation
Yes, it's supposed to be positive. Please reference the section of the video by telling us the time. This will enable us easy access to that section and address the issue ASAP. Thank you.
Good one, really helpful
That's good to hear.
wow, wow, wow i see this as a very good tool. thanks
You're welcome, Habeeb.
I tried this but it is telling me "No solutions found. Adjust parcel layer parameters or angle". How will i correct it
It doesn´t work, assh0le.
nice content, what is the name of the book you use
Thank you. We use Surveying by Dr Chandra.
This is amazing great Geomaticians
It's good you liked it. 😁
Hi, I do not have number in the value column
very useful
Mine is saying " no solution found" can you help with solution to that pl?
Please do you have a whatsapp or telegram channel that someone from Nigeria cam join
Yes. WhatsApp: chat.whatsapp.com/KyI7PNz8x6E4dbJ2fbEI8w Telegram: t.me/Surveying_Solutions Let's meet!
Cool knowledge. Even as an architect, I so much appreciate this. Thanks
That's impressive. You're welcome!
AMAZING WORKS GREAT
Awesome!
Thank you so much, very explicit
You're welcome.
That's not a DEM, it's a satellite image !!!!
Anonymous, look well.
Pls can I your WhatsApp contact,I have an urgent question to send based on co edition equations
Can you pls solve condition equation adjustment using observed angles and not linear equations
Here you go, czcams.com/video/owoNolAj0tU/video.html. Enjoy!
Does this work for reporjecting lidar .laz files?
It should work.
Hello, thank you for this video. Do you know how I can export this new 3d DEM model to the 3D layer group of the contents area? I am trying something similar and my goal is to export the complete model to ArcGIS online. I am not sure if I need to create a scene layer package or not.
Hello.. Please make a tutorial on future prediction of land surface temperature.. Arcgis, qgis
Tanks, nice introduction
You're welcome, Aguh!
Nice one guys. This is cool
Thank you, sir!
Pls can you do a vedio on how to intapolate
I love ur lectures, Henry FSS
Thank you so much
You're welcome, John.
Can I get the link to download autocad
Richard, please download from their website or getintopc.com. You should be good either way!
Thank you Sir. It helps me a lot.
You're welcome.
Thank youuuu so much!
You're welcome.
Thanks for this tutorial. It is very handy
You're welcome, Emmanuel.
How to get 100% accurate coordinate from google earth
Please go to site, you'd get something close to 100%!
Nice
Thank you.
Hi sir . Do you have any ideas how to make analyse AHP on qgis 2.18.15please
It's something I can look into, if possible.
@@SurveyingSolution can i have your email to give details please?
@traveauxdinstallation6017 Please reach out via this email Survsolution@gmail.com Thank you.
OK, but your coordinates are till in lat/long.
Hello, Alfred. Have you checked the properties of the raster layer?
@@SurveyingSolution Hello. Yes and still cannot get it to show me coordinates in UTM....
Hello @@alfredo9173, are you referring to the video or your personal practice?
@@SurveyingSolution Well, actually I thought you were trying to show how to change from lat/long angular to cartesian UTM. Yes, I do have an issue.... Thx
Well done sir. The information in this video are worthwhile and very helpful, but the quality of the video is a little not too sharp sir.
You're welcome, Ojo. We'd continue to improve the quality of our videos.
cant understand shit man
Does minutes relate to the bearing of the line? Or the distance???
The bearing, please. Bearings are recorded in Degrees, Minutes, and Seconds.
Your recording isn't clear. Please tilt the camera closer to the workspace next time
Thanks so much.
You're welcome, Hamza.
Thanks dear
You're welcome.
Thanks so much for your help
You're welcome, Ogechi.
Very useful information ❤
We're glad it helps... Enjoy!
How do I get tutorials on how to use survey instruments
THANK YOUUU
You're welcome.
Good day team, nice video. Please, can you always attach sample data to your videos to follow through while watching the videos. Thank you.
thank you! This is really helpful
You're welcome.
Please can 30m interval be used during levelling project sir
Yes, Bolu. However, it won't give you a very good depiction of the change in elevation of the terrain, especially in a relatively small area. It might be OK if you're working on a larger area because you might not need as much details as you'd in the smaller area. Again, it depends on the specifications given to you for the project. I hope these help!