Questions tagged [chart]

A chart is a graphical display of data.

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Create a chart with JavaScript

I would like to create a chart with chart JS. I would like to load a JSON from my AGE rest and after that, create a cumulative chart with the length of my polylines. My code blocks when I try to load ...
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Error in generating a chart: No images in the collection intersect the specified regions

I am getting an error saying: no images in the collection intersect the specified regions thus my time-series chart cannot be generated. What might be the reason for this? The link to my code https:/...
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ArcMap only plots some points of shapefile

I am using ArcMap 10.7. I have a point shapefile with nine weather stations in Patagonia. It's available here. I want to plot all four variables as a bar chart for each station, so that you can see ...
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Creating BoxPlot in R

I want to create boxplot to show Forest Percent by localunit (GaPa_NaPa). The attribute data is as shown below:- The data frame is as shown below:- structure(list(GaPa_NaPa = c("Gaidahawa", ...
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Connection of QGIS with Gantt/Project management/Timeline management

Is there any plugin or possibility to connect QGIS with MS project professional? I want to show working in QGIS with time management.
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Land Surface Temperature in GEE: ,Creating a Chart with correct values

I have this code below for creating an LST for my region. Then, I create a chart with the mean values. But code gives the LST values in the chart in negative from the range -250 to -293. Now I do not ...
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No features contain non-null values of in graphy

I want to graph the NDVI series by another classified image, but when I graph it there is a wrong No features contain non-null values of "system:index". Howvever I already set the system:...
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DataTable Charts issue in Google Earth Engine

I am working on drawing a chart using datatable. So I followed the instructions in https://developers.google.com/earth-engine/guides/charts_datatable I noticed a 30 days shift between the data and the ...
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Error generating chart: No features contain non-null values of "system:time_start" in generating chart of NDVI

I got this error when trying to produce a time-series chart of NDVI in Sentinel-2. I've already tried something like .copyProperties(image)".set('system:time_start',image.get('system:time_start'))...
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Google Earth Engine - NDVI chart - projection error

Once I multiply NDVI and EVI values with 0.0001, I get an error that is shown below. So I can't get the chart. Error generating chart: Projection error: Unable to compute intersection of geometries ...
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Adding subscripts or superscripts into bar chart using ArcMap

Is it possible to add subscripts or superscripts into a bar chart axis making in ArcMap? I know that for labels the code is <sup>2</sup> or with sub. I'm using in the label bar chart but ...
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Variable importance for Random Forest classification in GEE

I performed RF classification in GEE and calculated variable importance with two various scripts successfully. The first script is: var dict = classifier01.explain(); print('Explain 1:',dict); var ...
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Plotting spectral signature of training data from a supervised classification in GEE

I need to plot the spectral signature of training data in each of the 8 classes of the supervised classification script I wrote in GEE. The variable 'training_points' is made of sample points I ...
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How to combine multiple classifications data, into one image chart using Google Earth Engine, for the purpose of visualization?

I am trying to create a LULC map of my study area for the period of 2018-2021. I have classified the regions in 4 classes, and would like to plot the classified area for each class and for each year ...
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No features contain non-null values of "system:time_start". NDBI

I've run into the stated error with this code on Google Earth Engine: var L8 = ee.ImageCollection('LANDSAT/LC08/C01/T1_32DAY_TOA'); var L8_MedianWinter = L8.filterDate('2014-03-01', '2014-07-30')....
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NDBI Chart - No features contain non-null values of "system:time_start"

Ideally, I'd like to be running a yearly chart observing NDBI of my selected geometry. I believe I may be missing part of the code for that, and I am unsure how to go about it. I'm running into the ...
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GIS Dashboard serial chart not showing data plotted correctly when something other than date is used as the category field

I am making a serial chart in a GIS dashboard. When I select "date" for the category, my data are stacked nicely by date, with multiple points from the same date showing on the same value on ...
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Cumulative sum of thermal anomalies in Earth Engine

I am writing a short script that will be used to chart thermal anomalies (FIRMS) by year for a given boundary. The following code will achieve this... var now = new Date() // IMPORT MODIS ACTIVE ...
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Google Earth Engine chart won’t create at 30m scale

I used Google Earth Engine to classify an image and now want to display the fraction of the image occupied by each training class in a chart. However, I am getting the error returned as: "Image....
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Optimization of code for GEE charts

I'm extracting spectral signatures from Sentinel 2 imagery. I need to plot the chart for a certain target area showing the signature of the area and that one of a different reference area. Then I need ...
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133 views

Land Surface Temperature in GEE: Creating a Chart

I have this code below for creating a LST for my region. Now I want to create a chart with the median instead of the mean values. But I do not know how and where in the code. Besides, I would like to ...
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Draw multiple charts in one page (or image) in GEE

Is it possible to draw multiple charts in one page/image in Google Earth Engine? Something similar to the .setOnLoadCallback() in Google Charts.
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Setting column order of chart in Google Earth Engine

The information of month, year and area are stored in a FeatureCollection, and were plotted by ui.Chart.feature.groups. In the chart, however, it is noted that the order of month columns is wrong. How ...
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122 views

Getting data from Navionics or Genesis Maps(C-map)

Is there a way to import either vectors or at least map tiles I can trace from Navionics or C-MAP Genesis. I have QGIS and ArcGIS Pro, as well as Global Mapper available to me. Genesis does offer ...
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Error generating chart: No features contain non-null values of "system:time_start". Landsat 8 Surface Temperature Time-Series Chart (Earth Engine)

I want to create an average surface temperature time series chart (+ per year). However I am encountering this error Error generating chart: No features contain non-null values of "system:...
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248 views

Creating formatted chart for Confusion Matrix using Google Earth Engine

I was curious how to create a formatted Confusion Matrix: (https://developers.google.com/earth-engine/apidocs/ee-confusionmatrix) I've completed my Supervised Classification, and I've created a ...
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Different plot for individual in Google Earth Engine without writing plot lines multiple times

For example, I have three polygons over the NDVI layer so I want three different charts, and if 100 then 100. I don't want one chart with different lines. I want to avoid writing the same plot chart ...
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1 answer
115 views

Plot time series for NDVI on Landsat8

I want to select a region on a map and get the time series for NDVI based on Landsat 8 imagery. If possible, it would be better if I can get the image row and path through matching the Landsat tiles ...
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How to get Hansen forest loss chart to only show values between 2015 and 2020

I am trying to use ui.Chart.array.values in GEE to make a yearly forest loss chart with the Hansen dataset. I am only interested in the years between 2015 and 2020 and can't figure out how to isolate ...
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Data is not appearing in chart in GEE

I have not been able to figure out why the dataset I load does not appear in the chart I created in Google Earth Engine. I am new to GEE and JavaScript in general, so I may be missing something ...
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When reading a BSB/KAP chart file, I am getting incorrect run lengths. Many runs lengths are way too long

My java code for reading the run length portion of the stream is shown below. The run lengths being read in don't make sense. byte b = (byte) br.read(); //read a byte from the stream ...
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Converting hourly data to daily data and chart it in GEE

I'm using the following code to convert hourly data into daily data records. In the first case (Surface Solar Radiation) it works well but in the second case (Mean 2m air temperature) occurs an error ...
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Chart with mean and standard deviation bands in Google Earth Engine

I am trying to make a NDVI time-series chart with Google Earth Engine displaying standard deviation bands: In input I have 2 points and I created a buffer to enlarge the area to study better the NDVI ...
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EBBI Values too small

I'm trying to calculate EBBI at Google Earth Engine for images from Landsat 5, but the values that I get are too small. I've already tried change the study area and also making an image. But tha ...
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Making Chart label and ranging vertical axis in Google Earth Engine

Does anyone know how to make labels place in the same position, though it is on or in the graphic? And how to change the range of vertical axis. In the following picture, we can see the range of ...
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Increasing decimal in table chart Google Earth Engine

I have code that generates NDVI times series chart. The values are with 3 decimal places. I want to increase the decimal places to 4 or 5. Is there a way of doing that? My code: // Load raster data (...
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Why the bar chart can not appear in the Console of GEE?

I am trying to create a chart of classified landcover in GEE, but the chart does not appear in the Console. Could someone please have a look at my scripts and point out what's wrong? var ...
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Getting chart Google Earth Engine with a data from class group

i want to creat a chart from a single class group, this the code : var areaImage_1990 = ee.Image.pixelArea().divide(1e6).addBands( classified_1990) var areas_1990 = areaImage_1990....
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2 votes
1 answer
565 views

Extracting pixel values in sample polygons in Google Earth Engine

I am trying to generate histogram of pixel values for my sample polygons. I used the code suggested on Histogram Matching in Google Earth Engine. Its working but I am not able to control the bin size ...
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Air temperature chart using ERA5 dataset in Google Earth Engine [closed]

I used this code to map 2-meter temperature over Italy from 2000-2020 using ERA5 dataset in GEE. https://code.earthengine.google.com/6dc6f44e827b9e033d2c2227aa2363b1 I used Mean reducer to show the ...
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Converting numbered day of year to Month on the X axis for NDVI time series analysis for a range of years [closed]

I am working on an NDVI time-series series analysis to detect incidence pests. Timeseries generated by landcover is okay as I am using ui.Chart.image.series function. The problem I have is with the ...
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1 answer
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Creating chart with day-of-year time series for multiple regions using Google Earth Engine

I'm trying to create a chart of NDVI values that shows the average values for each day of the year for the last 5 years. I think exactly what I need is this: https://developers.google.com/earth-engine/...
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1 vote
1 answer
257 views

Sort column by values in ui.Chart.feature.byProperty in Google Earth Engine

I am creating a bar chart of band importance of a random forest classifier in GEE. The default bar order seems to be by name. How can I sort the columns in descending order depending on each column ...
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1 answer
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Controlling class label and color from classified image in GEE column chart?

I am trying to create a column chart from a land use/land cover (lulc) classified image (more specifically, the amount of area per lulc class). I was able to create the chart but couldn't set the ...
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GEE, scatter plot. ERROR: array length mismatch

In Google Earth Engine i am trying to find scatter between elevation and occurrence but i am getting common number of array vectors ''' var data=ee.Image("JRC/GSW1_3/GlobalSurfaceWater")....
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Change Detection Chart from lists in Google Earth Engine

I want to create a chart from classes area (square kilometers) that I calculated from the land cover supervised classification process. These classes area are in form of lists (these are printed in ...
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3 votes
0 answers
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Chart multiple regions on one histogram

I'm having trouble trying to chart multiple regions onto one histogram. var urban1 = urban.first().geometry(); var pine_forest1 = pine_forest.first().geometry(); var regions = ee.FeatureCollection([ ...
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1 vote
1 answer
351 views

TerraClimate: Error generating chart: Data column(s) for axis #0 cannot be of type string

I am using "TerraClimate: Monthly Climate and Climatic Water Balance for Global Terrestrial Surfaces, University of Idaho" dataset... When I try my code, I have this error message Error ...
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2 votes
1 answer
271 views

Stacked bar chart in QGIS

I have seen several videos of being able to do stacked bars as diagrams to represent atrributes in QGIS (e.g. https://www.youtube.com/watch?v=Ras5y6TpECk&ab_channel=WiseGIS) However I do not see ...
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5 votes
0 answers
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Hiding missing values on bar charts in QGIS

I'm trying to hide the bars when there are no values available on my bar charts. This, in order to differentiate missing values from values that are existing but are very close to zero or equal to ...
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