D3 Heatmap uses CANVAS pixel level detail script src https d3js org d3 v7 min js script script src https d3js org d3 hsv v0 1 min js script canvas style width 600px canvas script let jsondata width 29 height 20 values 103 105 106 107 105 104 105 106 107 110 110 109 109 108 107 106 104 104 103 103 101 100 100 97 96 96 95 94 94 105 106 108 109 109 110 110 112 115 116 119 116 112 110 110 108 106 106 105 104 103 102 100 98 96 96 96 95 94 106 108 109 111 114 115 119 130 134 135 135 130 121 116 111 112 110 109 107 106 104 103 101 99 96 96 96 95 94 107 109 110 117 120 129 139 145 150 154 151 143 130 124 120 117 116 113 109 106 104 101 100 99 97 96 96 95 94 108 110 112 120 131 142 152 163 170 175 171 160 149 136 126 123 120 119 111 110 109 109 103 100 97 96 96 96 95 108 111 118 130 140 153 165 177 180 180 179 168 156 139 130 126 125 124 120 120 123 117 108 100 100 96 96 96 95 108 117 129 141 153 165 177 185 180 178 179 173 157 143 135 130 132 131 133 137 136 124 116 109 105 100 97 97 96 110 124 139 148 163 176 187 186 175 169 171 170 160 152 144 137 138 140 140 140 140 131 121 112 108 105 100 99 98 110 127 140 154 171 184 191 183 166 156 155 165 166 161 152 145 146 145 142 140 138 131 123 117 112 110 105 100 99 110 124 142 157 174 187 191 182 164 153 149 161 170 166 159 153 155 150 145 140 136 131 126 120 116 113 107 105 100 108 120 140 158 169 183 193 184 167 158 157 166 176 176 164 160 163 157 148 142 139 135 129 124 119 116 112 110 107 107 118 129 150 165 181 191 189 177 169 169 174 179 179 168 168 170 160 152 149 147 143 136 129 123 118 111 110 109 104 111 123 141 161 179 186 190 185 180 179 177 178 174 166 168 170 162 155 150 150 150 144 134 127 117 107 105 102 101 107 120 136 155 170 178 182 183 180 174 168 164 164 159 160 166 159 155 150 150 150 149 140 129 112 103 101 101 103 106 114 127 150 160 167 172 175 173 164 155 153 150 148 148 150 152 150 150 150 150 149 141 125 108 102 101 100 102 105 109 120 133 147 152 161 164 163 154 147 144 140 141 142 142 142 143 145 146 148 145 140 123 108 105 103 100 102 104 106 113 124 130 136 147 154 151 146 139 132 128 129 131 132 134 136 139 140 139 137 130 124 112 105 101 99 100 103 105 108 117 123 130 139 146 145 138 130 121 120 121 124 125 125 126 127 129 128 128 125 119 108 105 103 101 101 104 107 110 114 121 128 135 140 137 131 120 117 115 117 118 120 121 119 117 118 119 123 122 113 106 103 101 100 101 104 107 110 115 118 126 130 133 129 120 114 112 112 113 115 117 118 115 114 116 117 119 120 112 104 102 100 99 let blob new Blob jsondata type text plain let url URL createObjectURL blob var i0 d3 interpolateHsvLong d3 hsv 120 1 0 65 d3 hsv 60 1 0 90 var i1 d3 interpolateHsvLong d3 hsv 60 1 0 90 d3 hsv 0 0 0 95 var interpolateTerrain function t return t 0 5 i0 t 2 i1 t 0 5 2 var color d3 scaleSequential interpolateTerrain domain 90 190 d3 json url then function volcano console log loaded var n volcano width m volcano height var canvas d3 select canvas attr width n attr height m var context canvas node getContext 2d image context createImageData n m for var j 0 k 0 l 0 j m j for var i 0 i n i k l 4 var c d3 rgb color volcano values k image data l 0 c r image data l 1 c g image data l 2 c b image data l 3 255 context putImageData image 0 0 console log ready script

6 159 155 150 150 150 149 140 129 112 103 101 101 103 106 114 127 150 160 167 172 175 173 164 155 153 150 148 148 150 152 150 150 150 150 149 141 125 108 102 101 100 102 105 109 120 133 147 152 161 164 163 154 147 144 140 141 142 142 142 143 145 146 148 145 140 123 108 105 103 100 102 104 106 113 124 130 136 147 154 151 146 139 132 128 129 131 132 134 136 139 140 139 137 130 124 112 105 101 99 100 103 105 108 117 123 130 139 146 145 138 130 121 120 121 124 125 125 126 127 129 128 128 125 119 108 105 103 101 101 104 107 110 114 121 128 135 140 137 131 120 117 115 117 118 120 121 119 117 118 119 123 122 113 106 103 101 100 101 104 107 110 115 118 126 130 133 129 120 114 112 112 113 115 117 118 115 114 116 117 119 120 112 104 102 100 99 let blob new Blob jsondata type text plain let url URL createObjectURL blob var i0 d3 interpolateHsvLong d3 hsv 120 1 0 65 d3 hsv 60 1 0 90 var i1 d3 interpolateHsvLong d3 hsv 60 1 0 90 d3 hsv 0 0 0 95 var interpolateTerrain function t return t 0 5 i0 t 2 i1 t 0 5 2 var color d3 scaleSequential interpolateTerrain domain 90 190 d3 json url then function volcano console log loaded var n volcano width m volcano height var canvas d3 select canvas attr width n attr height m var context canvas node getContext 2d image context createImageData n m for var j 0 k 0 l 0 j m j for var i 0 i n i k l 4 var c d3 rgb color volcano values k image data l 0 c r image data l 1 c g image data l 2 c b image data l 3 255 context putImageData image 0 0 console log ready script

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dropdown
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expandable
faker
fetchplus
fileupload
fixedtopbar
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fluidgaswatergl
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highlight
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number
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rating
rayambient
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reexpcross
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regex
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rotateimg
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rss
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svg
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