Questions tagged [agriculture]

The science of cultivating land and rearing crops or livestock

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21 views

Making chart of FIRMS data in Google Earth Engine

I'm trying to analyze crops burned areas in GEE. I want to use FIRMS data to make a chart of "T21" and "confidence" bands to see how these variables change in a specific period (a ...
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1answer
105 views

Making a buffer cover a specific area (need to calculate overlap)

I work in precision agriculture and use QGIS. Today's technology makes it possible to adjust the spreading width of, for example, sprayers and manure spreaders according to where you have driven ...
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10 views

Where can I find reflectance / VI data for crops for different dates across their growing season?

I have been trying to find literature values for reflectance of soybean for different dates along the growing season (I am specifically interested in 30, 60 and ~120 days after planting - so the V3/V4 ...
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15 views

TIMESAT Quality Data

I am trying to analyse time-series images from MODIS (MOD13Q1) in TIMESAT to clear the noise and get an output. With EVI images I got also QA. I have to use it because there is often a cloud cover in ...
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18 views

Vegetation detection of anthropic crops with Google Earth Engine

I am very new using Google Engine and I need to know how to detect only agricultural crops on slopes without them mixing with that natural vegetation on hills. I have tried different indexes (like ...
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1answer
85 views

Need Dominion Land Survey (DLS) grids loaded into QGIS for province of Saskatchewan in Canada

I found a source that allows the download of a shapefile for the grid system for Alberta, but am still in need of the same thing for the entire Dominion Land Survey Grid, or just Saskatchewan. I'm ...
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2answers
136 views

Cheap relative positioning

I have a 6 acre permaculture farm, and I would like to be able to plant something at a location, log the location, and be able to find it again to within about a foot accuracy. I do not need the ...
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60 views

Getting Geometry error: One or more input features have invalid geometry from QGIS

I am trying to use the "Split With Lines" tool to split a polygon layer that consists 1000+ separate objects. Geometry error: One or more input features have invalid geometry. The tool keeps ...
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1answer
103 views

Checking accuracy of supervised classification method in ArcGIS Pro

I have a question about my image classification method in ArcGIS Pro 2.4. I'm looking at a field of grain sorghum and doing a project that requires me to define certain features within the image for ...
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2answers
54 views

GPS coordinate of center of a grid

I am working on a project to identify weeds. I used the grid to separate the area. Each cell is marked weed or no weed. I would like to get the GPS of the center of each cell with a weed in it. Does ...
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0answers
34 views

Identifing specific plants out indexmaps (pixelgroups) and convert to .shp

I am working on a project where I have to identify a specific plant (it is toxic) in fields. I made a high resolution Orthomosaic (1,4cm7/px) and created a vegetation index where the plant I am ...
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47 views

Calculate % agriculture and % forestry cover across each 10km square of the UK

I am working on investigating the relationship between agricultural intensity and the diversity of birds. I have a shapefile of a map that splits the UK into 10km squares and for each square I need to ...
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1answer
362 views

GLCM measure in an object-based classification?

I am trying to classify agricultural fields with randomForest model. I will conduct an object-based classification. To do so, in the code by Ned Horning, I provide the boundaries in a shapefile. The ...
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1answer
579 views

Using Statistics by category in QGIS?

I use the "statistics by category" tool from QGIS to learn what grain yields I got from different combinations of scenarios like: Soil A + Hybrid A + Planting Date A = Yield n Soil B + Hybrid A + ...
5
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1answer
257 views

Choosing Topographic Wetness Index or Flow Accumulation raster?

What is the better raster to use qualitatively - Topographic Wetness Index or Flow Accumulation - to clearly see potential areas of surface flow/wetness across a landscape? As an example, what's "...
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2answers
84 views

Availability of Frequent LiDAR Data in UK?

I am looking for LIDAR data of grasslands located all around UK with a spatial resolution of 1m and a frequency of at least once a week. I've already had a look at the Environmental Agency but their ...
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1answer
81 views

Purchasing NDVI imagery for South Western England? [closed]

I am working on a project developing an application for livestock farmers where they can monitor their feed using satellite data. The main aim is to calculate the biomass of a field of grass. The ...
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1answer
473 views

Open source remote sensing and satellite imagery DATA [closed]

What are the most known libraries of open source data related to remote sensing and satellite imagery? Especially applicated to agriculture? And what are their resolutions and frequencies?
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32 views

Merging Features in QGIS While Avoiding Rings

I have a large grid (~1m/feature) poly shapefile I need to get into an application controller. The controller is seeing coverage, so a feature=already applied, no feature=apply. The features can have ...
3
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1answer
690 views

Automated crop row detection

I'm trying to identify crop row automatically (or as automated as possible). So far I can identify lines using supervised classification in QGIS (semiclassificationplugin) or Ecognition, I ...
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1answer
55 views

Satellite image of agriculture land cover for some country [closed]

I am looking for a free satellite image of agriculture land cover for North Korea. Can someone guide me to any free resource. Is it available on earth Explorer, if yes, which image should I download....
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1answer
66 views

Using complex overlapping polygon in QGIS?

I'm trying to solve quite a tough analytical problem and hoping I can find a way to do it in QGIS. Basically, I have developed a map of Australia with an overlay of agricultural production by zone (...
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1answer
494 views

Latitude and longitude information of agricultural land [closed]

Is there a method by which I can get latlong details of agricultural land? Latlong information of 1 point in the land is not useful, as I want details of the entire agriculture boundary (from latlong ...
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1answer
95 views

NDVI usage for ArcCollector and Crop Yield

So my question is as follows: I am a GIS tech for a large vineyard management company. Every year a real struggle of ours is getting a crop estimation (with +- %15 accuracy, company wants it to be +-%...
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2answers
803 views

Calculate NDVI image from R and NIR channels and rescale it to 0-255

I have images of plants taken in Red(R) and Near End Infrared(NIR) field, I calculate the NDVI image per pixel using the below formula, NDVI = (R-NIR)/(R+NIR) , for all pixels, I get a range ...
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0answers
55 views

Make rectangles from agricultural field sizes (ArcGIS 10)

I got a task to do as research assistant of which im not sure how to do.. I have a layer with field polygons of agricultural fields (pretty large scale). I want to create rectangles for each field ...
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1answer
277 views

How to collect training data for land cover classification?

I want to begin mapping various land cover such as coconut and pine. My issue is I do not have much experience in terms of collecting landuse information or analyzing satellite imagery and analysis. ...
7
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1answer
503 views

Interpolating Daily Values from Monthly Grids using QGIS?

I am currently performing a bioclimatic analysis using monthly averaged climate grids. One particular calculation, Growing Degree Days, relies on daily maximum/minimum temperature and a threshold ...
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1answer
597 views

Sentinel-1: biomass for agriculture

How do can I calculate biomass for some agriculture by using VV and VH polarisation SAR images? I know there are some correlation for HV RADARSAT-2 to get biomass for some agriculture like corn, wheat,...
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3answers
173 views

Learning resources for SAR images?

I would like to learn more on processing SAR images (general characteristics, pre-processing, filtering), in particular Sentinel-1, for crop monitoring (paddy rice in particular) in areas where ...
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3answers
2k views

Advantage of Digital Elevation Model (DEM) in Agriculture?

I have given the task to create Digital Elevation Model (DEM)'s of an agricultural area. I am programmer with Computer Science background and very new to GIS can anyone explain what is advantage of ...